Acai Berries

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Lucimara M C Cordeiro - One of the best experts on this subject based on the ideXlab platform.

  • extraction and characterization of pectins from primary cell walls of edible Acai euterpe oleraceae Berries fruits of a monocotyledon palm
    Carbohydrate Polymers, 2017
    Co-Authors: Thaisa Moro Cantujungles, Marcello Iacomini, Thales R Cipriani, Lucimara M C Cordeiro
    Abstract:

    Abstract Acai Berries ( Euterpe oleracea ) are greatly consumed in Brazil and exported to other countries as a nutritional supplement, due to health benefits attributed to its consumption. However, the complete chemical structure of bioactive polysaccharides was not fully elucidated yet. In this work, we characterize pectic polysaccharides from Acai Berries through monosaccharide composition, HPSEC, methylation and 13 C and 1 H/ 13 C HSQC-DEPT-NMR analyses. A highly methoxylated homogalacturonan with a DM of 88% and Mw of 22 kDa together with small amounts of a mannoglucan were found. Moreover, a type II arabinogalactan (Mw = 45 kDa) containing a backbone with high portions of 6- O -linked and 3,6- O -linked Gal p chains rather than 3- O -linked Gal p was also isolated and structurally characterized. The type II arabinogalactan was found as a side chain of a type I rhamnogalacturonan. These findings contribute to correlate the fine chemical structure with the previously reported action of Acai polysaccharides on innate immune response. Moreover, from the taxonomic point of view, the results bring new information about polysaccharide composition of primary cell walls of palms (Arecaceae), that despite being commelinid monocots, have a distinct cell wall composition.

Thaisa Moro Cantujungles - One of the best experts on this subject based on the ideXlab platform.

  • extraction and characterization of pectins from primary cell walls of edible Acai euterpe oleraceae Berries fruits of a monocotyledon palm
    Carbohydrate Polymers, 2017
    Co-Authors: Thaisa Moro Cantujungles, Marcello Iacomini, Thales R Cipriani, Lucimara M C Cordeiro
    Abstract:

    Abstract Acai Berries ( Euterpe oleracea ) are greatly consumed in Brazil and exported to other countries as a nutritional supplement, due to health benefits attributed to its consumption. However, the complete chemical structure of bioactive polysaccharides was not fully elucidated yet. In this work, we characterize pectic polysaccharides from Acai Berries through monosaccharide composition, HPSEC, methylation and 13 C and 1 H/ 13 C HSQC-DEPT-NMR analyses. A highly methoxylated homogalacturonan with a DM of 88% and Mw of 22 kDa together with small amounts of a mannoglucan were found. Moreover, a type II arabinogalactan (Mw = 45 kDa) containing a backbone with high portions of 6- O -linked and 3,6- O -linked Gal p chains rather than 3- O -linked Gal p was also isolated and structurally characterized. The type II arabinogalactan was found as a side chain of a type I rhamnogalacturonan. These findings contribute to correlate the fine chemical structure with the previously reported action of Acai polysaccharides on innate immune response. Moreover, from the taxonomic point of view, the results bring new information about polysaccharide composition of primary cell walls of palms (Arecaceae), that despite being commelinid monocots, have a distinct cell wall composition.

Marcello Iacomini - One of the best experts on this subject based on the ideXlab platform.

  • extraction and characterization of pectins from primary cell walls of edible Acai euterpe oleraceae Berries fruits of a monocotyledon palm
    Carbohydrate Polymers, 2017
    Co-Authors: Thaisa Moro Cantujungles, Marcello Iacomini, Thales R Cipriani, Lucimara M C Cordeiro
    Abstract:

    Abstract Acai Berries ( Euterpe oleracea ) are greatly consumed in Brazil and exported to other countries as a nutritional supplement, due to health benefits attributed to its consumption. However, the complete chemical structure of bioactive polysaccharides was not fully elucidated yet. In this work, we characterize pectic polysaccharides from Acai Berries through monosaccharide composition, HPSEC, methylation and 13 C and 1 H/ 13 C HSQC-DEPT-NMR analyses. A highly methoxylated homogalacturonan with a DM of 88% and Mw of 22 kDa together with small amounts of a mannoglucan were found. Moreover, a type II arabinogalactan (Mw = 45 kDa) containing a backbone with high portions of 6- O -linked and 3,6- O -linked Gal p chains rather than 3- O -linked Gal p was also isolated and structurally characterized. The type II arabinogalactan was found as a side chain of a type I rhamnogalacturonan. These findings contribute to correlate the fine chemical structure with the previously reported action of Acai polysaccharides on innate immune response. Moreover, from the taxonomic point of view, the results bring new information about polysaccharide composition of primary cell walls of palms (Arecaceae), that despite being commelinid monocots, have a distinct cell wall composition.

Thales R Cipriani - One of the best experts on this subject based on the ideXlab platform.

  • extraction and characterization of pectins from primary cell walls of edible Acai euterpe oleraceae Berries fruits of a monocotyledon palm
    Carbohydrate Polymers, 2017
    Co-Authors: Thaisa Moro Cantujungles, Marcello Iacomini, Thales R Cipriani, Lucimara M C Cordeiro
    Abstract:

    Abstract Acai Berries ( Euterpe oleracea ) are greatly consumed in Brazil and exported to other countries as a nutritional supplement, due to health benefits attributed to its consumption. However, the complete chemical structure of bioactive polysaccharides was not fully elucidated yet. In this work, we characterize pectic polysaccharides from Acai Berries through monosaccharide composition, HPSEC, methylation and 13 C and 1 H/ 13 C HSQC-DEPT-NMR analyses. A highly methoxylated homogalacturonan with a DM of 88% and Mw of 22 kDa together with small amounts of a mannoglucan were found. Moreover, a type II arabinogalactan (Mw = 45 kDa) containing a backbone with high portions of 6- O -linked and 3,6- O -linked Gal p chains rather than 3- O -linked Gal p was also isolated and structurally characterized. The type II arabinogalactan was found as a side chain of a type I rhamnogalacturonan. These findings contribute to correlate the fine chemical structure with the previously reported action of Acai polysaccharides on innate immune response. Moreover, from the taxonomic point of view, the results bring new information about polysaccharide composition of primary cell walls of palms (Arecaceae), that despite being commelinid monocots, have a distinct cell wall composition.

Ji Young Ryu - One of the best experts on this subject based on the ideXlab platform.

  • MMP expression alteration and MMP-1 production control by syringic acid via AP-1 mechanism
    BMC, 2018
    Co-Authors: Ji Young Ryu
    Abstract:

    Abstract Background Syringic acid is a phenolic compound that can be produced through selective hydrolysis of eudesmic acid containing 20% sulfuric acid. The acid is obtained by breaking down components, such as anthocyanin and lignin acid, present in the oils of Acai Berries and other fruits. Recently, the anti-inflammatory, selective toxicity, anticancer, and antioxidant effects of syringic acid have been studied, but few studies on the effects of syringic acid on human keratinocytes (HaCaT) cells have been published. The present study investigated the antioxidant effects of syringic acid, as a potential cosmetic ingredient, on matrix metalloproteinase (MMP) expression alteration and MMP production control through the activator protein-1 (AP-1) mechanism in HaCaT cells exposed to ultraviolet B radiation. Methods A reactive oxygen species (ROS)-scavenging assay using a luciferase reporter that utilizes the AP-1 response element, an enzyme-linked immunosorbent assay (ELISA), and quantitative reverse transcription polymerase chain reaction (qRT-PCR) were used. To confirm if ROS in HaCaT cells damaged by ultraviolet B are eliminated by syringic acid, 2′-7′-dichlorofluorescein diacetate was used to measure the ROS quantity. qRT-PCR analysis was used to measure the expressions of SOD1 mRNA, GPx1 mRNA, and catalase (CAT) mRNA, which are related to oxidation inhibition. To measure the anti-aging effects of syringic acid, qRT-PCR was used to measure the expression levels of MMP mRNA, c-Jun, and c-Fos. Results ROS were eliminated by syringic acid, and cell aging due to ultraviolet B was suppressed. Results of qRT-PCR analysis confirmed that syringic acid suppressed oxidation in HaCaT cells damaged by ultraviolet B. Further, syringic acid was found to suppress the expression of MMP mRNA, c-Jun, and c-Fos in a concentration-dependent manner. ELISA showed that MMP-1 production decreased in a concentration-dependent manner. The luciferase reporter analysis revealed a concentration-dependent decrease in the transcriptional activity of AP-1 promoter caused by syringic acid. Conclusions Syringic acid was shown to be involved in altering MMP expression and controlling MMP-1 production through the AP-1 mechanism. Thus, the antioxidant and anti-aging effects of syringic acid increased the survival rate of HaCaT cells damaged by ultraviolet B, suggesting that it can be used as a natural phytochemical in cosmetic products