The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Daniel Valero - One of the best experts on this subject based on the ideXlab platform.
-
Oxalic acid Preharvest Treatment increases antioxidant systems and improves plum quality at harvest and during postharvest storage
Journal of the science of food and agriculture, 2018Co-Authors: Alejandra Martínez-esplá, Maria Serrano, Daniel Valero, Domingo Martínez-romero, P J ZapataAbstract:Plums are much appreciated by consumers as fresh fruit but have a limited storage life. Since reactive oxygen species (ROS) are associated with fruit ripening, an increase in ROS scavenging antioxidant systems could lead to a delay in postharvest plum ripening and in maintaining fruit quality after long cold storage. RESULTS Results showed that crop yield (kg per tree) and fruit weight were enhanced by Preharvest oxalic acid (OA) Treatment of plum cultivars (?Black Splendor? and ?Royal Rosa?), although the on-tree ripening process was delayed. In addition, the ripening process during cold storage was delayed in plums from OA-treated tress, manifested by lower firmness and acidity losses and reduced ethylene production, as compared with fruits from control trees. Antioxidant compounds (phenolics, anthocyanins and carotenoids) and the activity of antioxidant enzymes were higher in plums from OA-treated trees than in controls, at harvest and during 50 days of cold storage. CONCLUSION OA Preharvest Treatment could be a useful tool to maintain plum quality properties during long-term storage, by delaying the postharvest ripening process through a delay in ethylene production, with an additional effect on increasing bioactive compounds with health beneficial effects. ? 2018 Society of Chemical Industry
-
Preharvest Treatments with salicylates enhance nutrient and antioxidant compounds in plum at harvest and after storage.
Journal of the science of food and agriculture, 2017Co-Authors: Alejandra Martínez-esplá, P J Zapata, Daniel Valero, Domingo Martínez-romero, Huertas M. Díaz-mula, Maria SerranoAbstract:Previous reports have addressed the effectiveness of salicylic acid (SA), acetylsalicylic acid (ASA) and methylsalicylate (MeSA) postharvest Treatments on maintaining quality properties during storage in several commodities. However, there is no literature regarding the effect of Preharvest Treatments with salicylates on plum quality attributes (at harvest or after long-term cold storage), which was evaluated in this research.; Results: At harvest, weight, firmness, individual organic acids, sugars, phenolics, anthocyanins and total carotenoids were found at higher levels in plums from SA-, ASA- and MeSA-treated trees than in those from controls. During storage, softening, colour changes and acidity losses were delayed in treated fruits as compared to controls. In addition, organic acids and antioxidant compounds were still found at higher levels in treated than in control plums after 40 days of storage. Results show a delay in the postharvest ripening process due to salicylate Treatments, which could be attributed to their effect in delaying and decreasing ethylene production.; Conclusion: Preharvest Treatment with salicylates could be a safety, eco-friendly and new tool to improve (at harvest) and maintain (during storage) plum quality and especially its content of bioactive compounds with antioxidant properties, increasing the health effects of plum consumption. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry.
-
Enhancement of Antioxidant Systems and Storability of Two Plum Cultivars by Preharvest Treatments with Salicylates.
International journal of molecular sciences, 2017Co-Authors: Alejandra Martínez-esplá, Daniel Valero, Maria Serrano, S Castillo, Domingo Martínez-romero, P J ZapataAbstract:In this research the effect of salicylic acid (SA), acetylsalicylic acid (ASA), and methylsalicylate (MeSA) Treatments, applied as a foliar spray during on-tree plum development, on fruit quality attributes, bioactive compounds, antioxidant activity, and the activity of the antioxidant enzymes at harvest and after long-term cold storage was evaluated in two plum cultivars ("Black Splendor", BS, and "Royal Rosa", RR). At harvest, plum quality parameters, such as weight, total phenolics (including anthocyanins, in BS), total carotenoids, and antioxidant activity, in both hydrophilic and lipophilic compounds were found at higher levels in plums from SA-, ASA-, and MeSA-treated trees than in those from control trees. During storage, fruit firmness, total acidity, and antioxidant compounds were at higher levels in treated, than in control, plums, which show an effect of salicylate Treatments on delaying the plum postharvest ripening process. In addition, the activity of the antioxidant enzymes catalase (CAT), peroxidase (POX), superoxide dismutase (SOD), and ascorbate peroxidase (APX) were also enhanced at the time of harvest in salicylate-treated plums as compared with plums from control trees. The activity of these antioxidant enzymes was also found at higher levels in salicylate-treated plums during storage. Thus, Preharvest Treatment with salicylates could be a safe, eco-friendly, and new tool to improve and maintain plum quality attributes, and especially their content of antioxidant compounds, with an additional effect on delaying the postharvest ripening process through increasing the levels of antioxidant compounds and the activity of the antioxidant enzymes.
-
Preharvest application of oxalic acid improves quality and phytochemical content of artichoke cynara scolymus l at harvest and during storage
Food Chemistry, 2017Co-Authors: Alejandra Martinezespla, M E Garciapastor, P J Zapata, Fabian Guillen, M Serrano, Daniel Valero, Amadeo GironesvilaplanaAbstract:Abstract In this study the effect of oxalic acid (OA) Treatment of artichoke plants ( Cynara scolymus L.) on head artichoke development and on artichokes quality parameters (weight loss, firmness, and color), respiration rate, antioxidant activity and phenolics (measured by Folin Ciocalteu and HPLC-DAD-ESI/MS n ) at harvest and during storage for 21 days at 2 °C was evaluated. OA Treatment increased the percentage of the first class artichokes although no significant effect was found in artichoke developmental process. OA-Treatment reduced the respiration rate of artichokes and led to higher total hydrosoluble antioxidant activity and total phenolics and hydroxycinnamics and luteolins concentration both at harvest and during cold storage. In addition, luteolin 7- O -glucuronide 3- O -glucoside was identified for the first time in artichoke. Thus, it can be concluded that OA Preharvest Treatment could be a natural and useful tool to delay the artichoke postharvest senescence and improve the reported health-beneficial properties of artichokes consumption.
-
Using Aloe vera as a Preharvest Treatment to maintain postharvest organic table grape quality
Acta Horticulturae, 2012Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, D Navarro, Domingo Martínez-romero, Maria SerranoAbstract:Organic table grape production has several disease and decay problems mainly due to Botrytis cinerea fungus. These problems are enhanced when the crops are located in wet areas or seasons, and with late cultivars grown in southern Spain. The effect of Aloe vera Treatment applied Preharvest under high relative humidity conditions on organic ‘Crimson Seedless’ table grape was evaluated. The use of A. vera reduced the microbiological counts at harvest (especially moulds), and this reduction was maintained during post-harvest storage. Additionally, the changes in quality parameters, such as firmness and colour during postharvest were reduced with the Preharvest A. vera Treatment. Furthermore, the percentage of rotten berries per cluster at the end of storage was lower in A. vera-treated (3%), compared with control fruit (13%).
P J Zapata - One of the best experts on this subject based on the ideXlab platform.
-
Oxalic acid Preharvest Treatment increases antioxidant systems and improves plum quality at harvest and during postharvest storage
Journal of the science of food and agriculture, 2018Co-Authors: Alejandra Martínez-esplá, Maria Serrano, Daniel Valero, Domingo Martínez-romero, P J ZapataAbstract:Plums are much appreciated by consumers as fresh fruit but have a limited storage life. Since reactive oxygen species (ROS) are associated with fruit ripening, an increase in ROS scavenging antioxidant systems could lead to a delay in postharvest plum ripening and in maintaining fruit quality after long cold storage. RESULTS Results showed that crop yield (kg per tree) and fruit weight were enhanced by Preharvest oxalic acid (OA) Treatment of plum cultivars (?Black Splendor? and ?Royal Rosa?), although the on-tree ripening process was delayed. In addition, the ripening process during cold storage was delayed in plums from OA-treated tress, manifested by lower firmness and acidity losses and reduced ethylene production, as compared with fruits from control trees. Antioxidant compounds (phenolics, anthocyanins and carotenoids) and the activity of antioxidant enzymes were higher in plums from OA-treated trees than in controls, at harvest and during 50 days of cold storage. CONCLUSION OA Preharvest Treatment could be a useful tool to maintain plum quality properties during long-term storage, by delaying the postharvest ripening process through a delay in ethylene production, with an additional effect on increasing bioactive compounds with health beneficial effects. ? 2018 Society of Chemical Industry
-
Preharvest Treatments with salicylates enhance nutrient and antioxidant compounds in plum at harvest and after storage.
Journal of the science of food and agriculture, 2017Co-Authors: Alejandra Martínez-esplá, P J Zapata, Daniel Valero, Domingo Martínez-romero, Huertas M. Díaz-mula, Maria SerranoAbstract:Previous reports have addressed the effectiveness of salicylic acid (SA), acetylsalicylic acid (ASA) and methylsalicylate (MeSA) postharvest Treatments on maintaining quality properties during storage in several commodities. However, there is no literature regarding the effect of Preharvest Treatments with salicylates on plum quality attributes (at harvest or after long-term cold storage), which was evaluated in this research.; Results: At harvest, weight, firmness, individual organic acids, sugars, phenolics, anthocyanins and total carotenoids were found at higher levels in plums from SA-, ASA- and MeSA-treated trees than in those from controls. During storage, softening, colour changes and acidity losses were delayed in treated fruits as compared to controls. In addition, organic acids and antioxidant compounds were still found at higher levels in treated than in control plums after 40 days of storage. Results show a delay in the postharvest ripening process due to salicylate Treatments, which could be attributed to their effect in delaying and decreasing ethylene production.; Conclusion: Preharvest Treatment with salicylates could be a safety, eco-friendly and new tool to improve (at harvest) and maintain (during storage) plum quality and especially its content of bioactive compounds with antioxidant properties, increasing the health effects of plum consumption. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry.
-
Enhancement of Antioxidant Systems and Storability of Two Plum Cultivars by Preharvest Treatments with Salicylates.
International journal of molecular sciences, 2017Co-Authors: Alejandra Martínez-esplá, Daniel Valero, Maria Serrano, S Castillo, Domingo Martínez-romero, P J ZapataAbstract:In this research the effect of salicylic acid (SA), acetylsalicylic acid (ASA), and methylsalicylate (MeSA) Treatments, applied as a foliar spray during on-tree plum development, on fruit quality attributes, bioactive compounds, antioxidant activity, and the activity of the antioxidant enzymes at harvest and after long-term cold storage was evaluated in two plum cultivars ("Black Splendor", BS, and "Royal Rosa", RR). At harvest, plum quality parameters, such as weight, total phenolics (including anthocyanins, in BS), total carotenoids, and antioxidant activity, in both hydrophilic and lipophilic compounds were found at higher levels in plums from SA-, ASA-, and MeSA-treated trees than in those from control trees. During storage, fruit firmness, total acidity, and antioxidant compounds were at higher levels in treated, than in control, plums, which show an effect of salicylate Treatments on delaying the plum postharvest ripening process. In addition, the activity of the antioxidant enzymes catalase (CAT), peroxidase (POX), superoxide dismutase (SOD), and ascorbate peroxidase (APX) were also enhanced at the time of harvest in salicylate-treated plums as compared with plums from control trees. The activity of these antioxidant enzymes was also found at higher levels in salicylate-treated plums during storage. Thus, Preharvest Treatment with salicylates could be a safe, eco-friendly, and new tool to improve and maintain plum quality attributes, and especially their content of antioxidant compounds, with an additional effect on delaying the postharvest ripening process through increasing the levels of antioxidant compounds and the activity of the antioxidant enzymes.
-
Preharvest application of oxalic acid improves quality and phytochemical content of artichoke cynara scolymus l at harvest and during storage
Food Chemistry, 2017Co-Authors: Alejandra Martinezespla, M E Garciapastor, P J Zapata, Fabian Guillen, M Serrano, Daniel Valero, Amadeo GironesvilaplanaAbstract:Abstract In this study the effect of oxalic acid (OA) Treatment of artichoke plants ( Cynara scolymus L.) on head artichoke development and on artichokes quality parameters (weight loss, firmness, and color), respiration rate, antioxidant activity and phenolics (measured by Folin Ciocalteu and HPLC-DAD-ESI/MS n ) at harvest and during storage for 21 days at 2 °C was evaluated. OA Treatment increased the percentage of the first class artichokes although no significant effect was found in artichoke developmental process. OA-Treatment reduced the respiration rate of artichokes and led to higher total hydrosoluble antioxidant activity and total phenolics and hydroxycinnamics and luteolins concentration both at harvest and during cold storage. In addition, luteolin 7- O -glucuronide 3- O -glucoside was identified for the first time in artichoke. Thus, it can be concluded that OA Preharvest Treatment could be a natural and useful tool to delay the artichoke postharvest senescence and improve the reported health-beneficial properties of artichokes consumption.
-
Using Aloe vera as a Preharvest Treatment to maintain postharvest organic table grape quality
Acta Horticulturae, 2012Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, D Navarro, Domingo Martínez-romero, Maria SerranoAbstract:Organic table grape production has several disease and decay problems mainly due to Botrytis cinerea fungus. These problems are enhanced when the crops are located in wet areas or seasons, and with late cultivars grown in southern Spain. The effect of Aloe vera Treatment applied Preharvest under high relative humidity conditions on organic ‘Crimson Seedless’ table grape was evaluated. The use of A. vera reduced the microbiological counts at harvest (especially moulds), and this reduction was maintained during post-harvest storage. Additionally, the changes in quality parameters, such as firmness and colour during postharvest were reduced with the Preharvest A. vera Treatment. Furthermore, the percentage of rotten berries per cluster at the end of storage was lower in A. vera-treated (3%), compared with control fruit (13%).
Maria Serrano - One of the best experts on this subject based on the ideXlab platform.
-
Oxalic acid Preharvest Treatment increases antioxidant systems and improves plum quality at harvest and during postharvest storage
Journal of the science of food and agriculture, 2018Co-Authors: Alejandra Martínez-esplá, Maria Serrano, Daniel Valero, Domingo Martínez-romero, P J ZapataAbstract:Plums are much appreciated by consumers as fresh fruit but have a limited storage life. Since reactive oxygen species (ROS) are associated with fruit ripening, an increase in ROS scavenging antioxidant systems could lead to a delay in postharvest plum ripening and in maintaining fruit quality after long cold storage. RESULTS Results showed that crop yield (kg per tree) and fruit weight were enhanced by Preharvest oxalic acid (OA) Treatment of plum cultivars (?Black Splendor? and ?Royal Rosa?), although the on-tree ripening process was delayed. In addition, the ripening process during cold storage was delayed in plums from OA-treated tress, manifested by lower firmness and acidity losses and reduced ethylene production, as compared with fruits from control trees. Antioxidant compounds (phenolics, anthocyanins and carotenoids) and the activity of antioxidant enzymes were higher in plums from OA-treated trees than in controls, at harvest and during 50 days of cold storage. CONCLUSION OA Preharvest Treatment could be a useful tool to maintain plum quality properties during long-term storage, by delaying the postharvest ripening process through a delay in ethylene production, with an additional effect on increasing bioactive compounds with health beneficial effects. ? 2018 Society of Chemical Industry
-
Preharvest Treatments with salicylates enhance nutrient and antioxidant compounds in plum at harvest and after storage.
Journal of the science of food and agriculture, 2017Co-Authors: Alejandra Martínez-esplá, P J Zapata, Daniel Valero, Domingo Martínez-romero, Huertas M. Díaz-mula, Maria SerranoAbstract:Previous reports have addressed the effectiveness of salicylic acid (SA), acetylsalicylic acid (ASA) and methylsalicylate (MeSA) postharvest Treatments on maintaining quality properties during storage in several commodities. However, there is no literature regarding the effect of Preharvest Treatments with salicylates on plum quality attributes (at harvest or after long-term cold storage), which was evaluated in this research.; Results: At harvest, weight, firmness, individual organic acids, sugars, phenolics, anthocyanins and total carotenoids were found at higher levels in plums from SA-, ASA- and MeSA-treated trees than in those from controls. During storage, softening, colour changes and acidity losses were delayed in treated fruits as compared to controls. In addition, organic acids and antioxidant compounds were still found at higher levels in treated than in control plums after 40 days of storage. Results show a delay in the postharvest ripening process due to salicylate Treatments, which could be attributed to their effect in delaying and decreasing ethylene production.; Conclusion: Preharvest Treatment with salicylates could be a safety, eco-friendly and new tool to improve (at harvest) and maintain (during storage) plum quality and especially its content of bioactive compounds with antioxidant properties, increasing the health effects of plum consumption. © 2017 Society of Chemical Industry.; © 2017 Society of Chemical Industry.
-
Enhancement of Antioxidant Systems and Storability of Two Plum Cultivars by Preharvest Treatments with Salicylates.
International journal of molecular sciences, 2017Co-Authors: Alejandra Martínez-esplá, Daniel Valero, Maria Serrano, S Castillo, Domingo Martínez-romero, P J ZapataAbstract:In this research the effect of salicylic acid (SA), acetylsalicylic acid (ASA), and methylsalicylate (MeSA) Treatments, applied as a foliar spray during on-tree plum development, on fruit quality attributes, bioactive compounds, antioxidant activity, and the activity of the antioxidant enzymes at harvest and after long-term cold storage was evaluated in two plum cultivars ("Black Splendor", BS, and "Royal Rosa", RR). At harvest, plum quality parameters, such as weight, total phenolics (including anthocyanins, in BS), total carotenoids, and antioxidant activity, in both hydrophilic and lipophilic compounds were found at higher levels in plums from SA-, ASA-, and MeSA-treated trees than in those from control trees. During storage, fruit firmness, total acidity, and antioxidant compounds were at higher levels in treated, than in control, plums, which show an effect of salicylate Treatments on delaying the plum postharvest ripening process. In addition, the activity of the antioxidant enzymes catalase (CAT), peroxidase (POX), superoxide dismutase (SOD), and ascorbate peroxidase (APX) were also enhanced at the time of harvest in salicylate-treated plums as compared with plums from control trees. The activity of these antioxidant enzymes was also found at higher levels in salicylate-treated plums during storage. Thus, Preharvest Treatment with salicylates could be a safe, eco-friendly, and new tool to improve and maintain plum quality attributes, and especially their content of antioxidant compounds, with an additional effect on delaying the postharvest ripening process through increasing the levels of antioxidant compounds and the activity of the antioxidant enzymes.
-
Using Aloe vera as a Preharvest Treatment to maintain postharvest organic table grape quality
Acta Horticulturae, 2012Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, D Navarro, Domingo Martínez-romero, Maria SerranoAbstract:Organic table grape production has several disease and decay problems mainly due to Botrytis cinerea fungus. These problems are enhanced when the crops are located in wet areas or seasons, and with late cultivars grown in southern Spain. The effect of Aloe vera Treatment applied Preharvest under high relative humidity conditions on organic ‘Crimson Seedless’ table grape was evaluated. The use of A. vera reduced the microbiological counts at harvest (especially moulds), and this reduction was maintained during post-harvest storage. Additionally, the changes in quality parameters, such as firmness and colour during postharvest were reduced with the Preharvest A. vera Treatment. Furthermore, the percentage of rotten berries per cluster at the end of storage was lower in A. vera-treated (3%), compared with control fruit (13%).
-
antifungal efficacy of aloe vera in vitro and its use as a Preharvest Treatment to maintain postharvest table grape quality
Postharvest Biology and Technology, 2010Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, Maria Serrano, D Navarro, D MartinezromeroAbstract:Abstract Aloe vera gel was added at several concentrations on potato dextrose agar (PDA) to test its efficacy on inhibiting mycelium growth of two common fungi responsible for fruit decay (Penicillium digitatum and Botrytis cinerea). For both fungi, the inhibition of mycelium growth rate increased with Aloe concentration, although to gain the same inhibition the necessary A. vera gel concentration was 3-fold higher for B. cinerea than P. digitatum. Overall, the dose of 250 mL L−1 led to 4- and 2-log reductions of mycelium growth for P. digitatum and B. cinerea, respectively. Based on these results, A. vera gel at 250 mL L−1 was applied as a Preharvest Treatment to table grape vineyards 1 or 1 and 7 days before harvesting. Fruit were cold-stored for 35 days and sampled weekly. Respiration rate and weight loss were significantly reduced in treated samples, while ripening parameters such as colour and fruit firmness were significantly delayed. Both mesophilic aerobics and mould and yeasts counts were significantly lower at harvest in treated samples, the effect being persistent during storage. At the end of the experiment, the percentage of rotted berries was significantly lower in treated than in control fruit. From these results it could be inferred that A. vera could be considered as a promising Preharvest Treatment to maintain table quality during postharvest storage.
S Castillo - One of the best experts on this subject based on the ideXlab platform.
-
Enhancement of Antioxidant Systems and Storability of Two Plum Cultivars by Preharvest Treatments with Salicylates.
International journal of molecular sciences, 2017Co-Authors: Alejandra Martínez-esplá, Daniel Valero, Maria Serrano, S Castillo, Domingo Martínez-romero, P J ZapataAbstract:In this research the effect of salicylic acid (SA), acetylsalicylic acid (ASA), and methylsalicylate (MeSA) Treatments, applied as a foliar spray during on-tree plum development, on fruit quality attributes, bioactive compounds, antioxidant activity, and the activity of the antioxidant enzymes at harvest and after long-term cold storage was evaluated in two plum cultivars ("Black Splendor", BS, and "Royal Rosa", RR). At harvest, plum quality parameters, such as weight, total phenolics (including anthocyanins, in BS), total carotenoids, and antioxidant activity, in both hydrophilic and lipophilic compounds were found at higher levels in plums from SA-, ASA-, and MeSA-treated trees than in those from control trees. During storage, fruit firmness, total acidity, and antioxidant compounds were at higher levels in treated, than in control, plums, which show an effect of salicylate Treatments on delaying the plum postharvest ripening process. In addition, the activity of the antioxidant enzymes catalase (CAT), peroxidase (POX), superoxide dismutase (SOD), and ascorbate peroxidase (APX) were also enhanced at the time of harvest in salicylate-treated plums as compared with plums from control trees. The activity of these antioxidant enzymes was also found at higher levels in salicylate-treated plums during storage. Thus, Preharvest Treatment with salicylates could be a safe, eco-friendly, and new tool to improve and maintain plum quality attributes, and especially their content of antioxidant compounds, with an additional effect on delaying the postharvest ripening process through increasing the levels of antioxidant compounds and the activity of the antioxidant enzymes.
-
Using Aloe vera as a Preharvest Treatment to maintain postharvest organic table grape quality
Acta Horticulturae, 2012Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, D Navarro, Domingo Martínez-romero, Maria SerranoAbstract:Organic table grape production has several disease and decay problems mainly due to Botrytis cinerea fungus. These problems are enhanced when the crops are located in wet areas or seasons, and with late cultivars grown in southern Spain. The effect of Aloe vera Treatment applied Preharvest under high relative humidity conditions on organic ‘Crimson Seedless’ table grape was evaluated. The use of A. vera reduced the microbiological counts at harvest (especially moulds), and this reduction was maintained during post-harvest storage. Additionally, the changes in quality parameters, such as firmness and colour during postharvest were reduced with the Preharvest A. vera Treatment. Furthermore, the percentage of rotten berries per cluster at the end of storage was lower in A. vera-treated (3%), compared with control fruit (13%).
-
antifungal efficacy of aloe vera in vitro and its use as a Preharvest Treatment to maintain postharvest table grape quality
Postharvest Biology and Technology, 2010Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, Maria Serrano, D Navarro, D MartinezromeroAbstract:Abstract Aloe vera gel was added at several concentrations on potato dextrose agar (PDA) to test its efficacy on inhibiting mycelium growth of two common fungi responsible for fruit decay (Penicillium digitatum and Botrytis cinerea). For both fungi, the inhibition of mycelium growth rate increased with Aloe concentration, although to gain the same inhibition the necessary A. vera gel concentration was 3-fold higher for B. cinerea than P. digitatum. Overall, the dose of 250 mL L−1 led to 4- and 2-log reductions of mycelium growth for P. digitatum and B. cinerea, respectively. Based on these results, A. vera gel at 250 mL L−1 was applied as a Preharvest Treatment to table grape vineyards 1 or 1 and 7 days before harvesting. Fruit were cold-stored for 35 days and sampled weekly. Respiration rate and weight loss were significantly reduced in treated samples, while ripening parameters such as colour and fruit firmness were significantly delayed. Both mesophilic aerobics and mould and yeasts counts were significantly lower at harvest in treated samples, the effect being persistent during storage. At the end of the experiment, the percentage of rotted berries was significantly lower in treated than in control fruit. From these results it could be inferred that A. vera could be considered as a promising Preharvest Treatment to maintain table quality during postharvest storage.
Fabian Guillen - One of the best experts on this subject based on the ideXlab platform.
-
Preharvest application of oxalic acid improves quality and phytochemical content of artichoke cynara scolymus l at harvest and during storage
Food Chemistry, 2017Co-Authors: Alejandra Martinezespla, M E Garciapastor, P J Zapata, Fabian Guillen, M Serrano, Daniel Valero, Amadeo GironesvilaplanaAbstract:Abstract In this study the effect of oxalic acid (OA) Treatment of artichoke plants ( Cynara scolymus L.) on head artichoke development and on artichokes quality parameters (weight loss, firmness, and color), respiration rate, antioxidant activity and phenolics (measured by Folin Ciocalteu and HPLC-DAD-ESI/MS n ) at harvest and during storage for 21 days at 2 °C was evaluated. OA Treatment increased the percentage of the first class artichokes although no significant effect was found in artichoke developmental process. OA-Treatment reduced the respiration rate of artichokes and led to higher total hydrosoluble antioxidant activity and total phenolics and hydroxycinnamics and luteolins concentration both at harvest and during cold storage. In addition, luteolin 7- O -glucuronide 3- O -glucoside was identified for the first time in artichoke. Thus, it can be concluded that OA Preharvest Treatment could be a natural and useful tool to delay the artichoke postharvest senescence and improve the reported health-beneficial properties of artichokes consumption.
-
Using Aloe vera as a Preharvest Treatment to maintain postharvest organic table grape quality
Acta Horticulturae, 2012Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, D Navarro, Domingo Martínez-romero, Maria SerranoAbstract:Organic table grape production has several disease and decay problems mainly due to Botrytis cinerea fungus. These problems are enhanced when the crops are located in wet areas or seasons, and with late cultivars grown in southern Spain. The effect of Aloe vera Treatment applied Preharvest under high relative humidity conditions on organic ‘Crimson Seedless’ table grape was evaluated. The use of A. vera reduced the microbiological counts at harvest (especially moulds), and this reduction was maintained during post-harvest storage. Additionally, the changes in quality parameters, such as firmness and colour during postharvest were reduced with the Preharvest A. vera Treatment. Furthermore, the percentage of rotten berries per cluster at the end of storage was lower in A. vera-treated (3%), compared with control fruit (13%).
-
antifungal efficacy of aloe vera in vitro and its use as a Preharvest Treatment to maintain postharvest table grape quality
Postharvest Biology and Technology, 2010Co-Authors: S Castillo, P J Zapata, Fabian Guillen, Daniel Valero, Maria Serrano, D Navarro, D MartinezromeroAbstract:Abstract Aloe vera gel was added at several concentrations on potato dextrose agar (PDA) to test its efficacy on inhibiting mycelium growth of two common fungi responsible for fruit decay (Penicillium digitatum and Botrytis cinerea). For both fungi, the inhibition of mycelium growth rate increased with Aloe concentration, although to gain the same inhibition the necessary A. vera gel concentration was 3-fold higher for B. cinerea than P. digitatum. Overall, the dose of 250 mL L−1 led to 4- and 2-log reductions of mycelium growth for P. digitatum and B. cinerea, respectively. Based on these results, A. vera gel at 250 mL L−1 was applied as a Preharvest Treatment to table grape vineyards 1 or 1 and 7 days before harvesting. Fruit were cold-stored for 35 days and sampled weekly. Respiration rate and weight loss were significantly reduced in treated samples, while ripening parameters such as colour and fruit firmness were significantly delayed. Both mesophilic aerobics and mould and yeasts counts were significantly lower at harvest in treated samples, the effect being persistent during storage. At the end of the experiment, the percentage of rotted berries was significantly lower in treated than in control fruit. From these results it could be inferred that A. vera could be considered as a promising Preharvest Treatment to maintain table quality during postharvest storage.