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Preetee Jaiswal - One of the best experts on this subject based on the ideXlab platform.
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enzyme inhibition by molluscicidal component of areca Catechu and carica papaya in the nervous tissue of vector snail lymnaea acuminata
Pesticide Biochemistry and Physiology, 2008Co-Authors: Preetee Jaiswal, Vinay Kumar Singh, Dayashankar SinghAbstract:Abstract In the present study toxic effects of active molluscicidal component of Areca Catechu and Carica papaya was studied on certain enzymes in the nervous tissue of freshwater snail Lymnaea acuminata. In in vivo and in vitro exposure of arecoline (active component of Areca Catechu seed) and papain (C. papaya latex and seed) significantly inhibited the acetylcholinesterase (AChE), acid and alkaline phosphatase (ACP/ALP) activity in the nervous tissue of L. acuminata. The inhibition kinetics of these enzymes indicate that arecoline and papain caused competitive and uncompetitive inhibition of AChE, respectively, whereas arecoline caused competitive–non-competitive inhibition of ACP/ALP and papain caused non-competitive inhibition of ACP/ALP. Thus the inhibition of AChE, ACP and ALP by arecoline and papain in the nervous tissue of L. acuminata may be the cause of molluscicidal activity of A. Catechu and C. papaya, respectively.
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molluscicidal activity of carica papaya and areca Catechu against the freshwater snail lymnaea acuminata
Veterinary Parasitology, 2008Co-Authors: Preetee Jaiswal, D K SinghAbstract:Abstract The molluscicidal activity of seed and lyophilized latex powder of Carica papaya and seed powder of Areca Catechu against the vector snail Lymnaea acuminata was studied. The toxicity of these plant products was time and dose dependent. The toxicity of C. papaya lyophilized latex powder (LC50 at 96 h: 8.38 mg/l) was more pronounced than that of A. Catechu seed powder (LC50 at 96 h: 12.32 mg/l) and C. papaya seed powder (LC50 at 96 h: 61.56 mg/l). Ethanolic extracts of C. papaya seed and A. Catechu seed were more toxic than their other extracts. The ethanolic extract of A. Catechu seed (LC50 at 24 h: 17.21 mg/l) was more effective than the ethanolic extract of C. papaya seed (LC50 at 24 h: 53.38 mg/l). The LC50 of column-purified fraction of A. Catechu seed at 96 h was 3.99 mg/l, whereas that of C. papaya seed was 7.06 mg/l. C. papaya and A. Catechu may be used as potent molluscicides since the concentrations used to kill the snails were not toxic for the fish Colisa fasciatus which shares the same habitat with the snail L. acuminata.
D K Singh - One of the best experts on this subject based on the ideXlab platform.
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molluscicidal activity of carica papaya and areca Catechu against the freshwater snail lymnaea acuminata
Veterinary Parasitology, 2008Co-Authors: Preetee Jaiswal, D K SinghAbstract:Abstract The molluscicidal activity of seed and lyophilized latex powder of Carica papaya and seed powder of Areca Catechu against the vector snail Lymnaea acuminata was studied. The toxicity of these plant products was time and dose dependent. The toxicity of C. papaya lyophilized latex powder (LC50 at 96 h: 8.38 mg/l) was more pronounced than that of A. Catechu seed powder (LC50 at 96 h: 12.32 mg/l) and C. papaya seed powder (LC50 at 96 h: 61.56 mg/l). Ethanolic extracts of C. papaya seed and A. Catechu seed were more toxic than their other extracts. The ethanolic extract of A. Catechu seed (LC50 at 24 h: 17.21 mg/l) was more effective than the ethanolic extract of C. papaya seed (LC50 at 24 h: 53.38 mg/l). The LC50 of column-purified fraction of A. Catechu seed at 96 h was 3.99 mg/l, whereas that of C. papaya seed was 7.06 mg/l. C. papaya and A. Catechu may be used as potent molluscicides since the concentrations used to kill the snails were not toxic for the fish Colisa fasciatus which shares the same habitat with the snail L. acuminata.
Dayashankar Singh - One of the best experts on this subject based on the ideXlab platform.
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enzyme inhibition by molluscicidal component of areca Catechu and carica papaya in the nervous tissue of vector snail lymnaea acuminata
Pesticide Biochemistry and Physiology, 2008Co-Authors: Preetee Jaiswal, Vinay Kumar Singh, Dayashankar SinghAbstract:Abstract In the present study toxic effects of active molluscicidal component of Areca Catechu and Carica papaya was studied on certain enzymes in the nervous tissue of freshwater snail Lymnaea acuminata. In in vivo and in vitro exposure of arecoline (active component of Areca Catechu seed) and papain (C. papaya latex and seed) significantly inhibited the acetylcholinesterase (AChE), acid and alkaline phosphatase (ACP/ALP) activity in the nervous tissue of L. acuminata. The inhibition kinetics of these enzymes indicate that arecoline and papain caused competitive and uncompetitive inhibition of AChE, respectively, whereas arecoline caused competitive–non-competitive inhibition of ACP/ALP and papain caused non-competitive inhibition of ACP/ALP. Thus the inhibition of AChE, ACP and ALP by arecoline and papain in the nervous tissue of L. acuminata may be the cause of molluscicidal activity of A. Catechu and C. papaya, respectively.
Yinglang Wan - One of the best experts on this subject based on the ideXlab platform.
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Identifying new compounds with potential pharmaceutical and physiological activity in Areca Catechu and Areca triandra via a non-targeted metabolomic approach.
Phytochemical analysis : PCA, 2021Co-Authors: Chuang Cui, He Zhang, Dongjun Liu, Lukas Schreiber, Weiquan Qin, Yinglang WanAbstract:INTRODUCTION The fruits of Areca Catechu, also called areca nuts, are widely used as popular masticatory and traditional herbal medicine in Asia. Besides arecoline and related alkaloids, limited information is available about further primary and secondary metabolites and their potential biological activities. OBJECTIVE Here we aimed to further enhance our knowledge on phytochemical profiles of A. Catechu and Areca triandra fruits. We intended to comprehensively identify metabolites in A. Catechu and A. triandra fruits. METHODOLOGY Metabolites were identified by ultra-performance liquid chromatography triple-quadrupole tandem mass spectrometry (UPLC-MS/MS). The occurrence of 12 selected bioactive compounds in 4 different developmental stages of A. Catechu and A. triandra was quantified by LC-MS/MS. RESULTS A total of 791 metabolites was identified. Of these, 115 metabolites could successfully be mapped to 44 Kyoto Encyclopedia of Genes and Genomes metabolic pathways, and 154 metabolites occurred at significantly different levels in A. Catechu compared to A. triandra. Several components with known biological activities were identified for the first time in A. Catechu and A. triandra. The abundance of many of these new components was similar in A. Catechu and A. triandra, but significantly different between the pericarp and the seeds of A. Catechu fruits. CONCLUSIONS Metabolic profiles indicate that fruits of the Areca species compared here have similar primary and secondary metabolites. Our findings provide new insights into A. Catechu and A. triandra as valuable sources for traditional medicine and they pave the way for further studies to potentially improve the underlying pharmaceutical and physiological effects.
G P Juyal - One of the best experts on this subject based on the ideXlab platform.
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tree species diversity species regeneration and biological productivity of seeded acacia Catechu willd in rehabilitated limestone mines in the north west indian himalayas
Land Degradation & Development, 2012Co-Authors: A Raizada, G P JuyalAbstract:Degraded sites like mine spoils on hillslopes are characterized by poor soil physico-chemical environments and instability. Reclamation of such areas using low cost bioengineering and vegetative methods were carried out in an abandoned limestone mine in the lower western Indian Himalayas and the impact of these measures on vegetation diversity, secondary succession and growth of seeded Acacia Catechu Willd. after two decades of protection are reported in this paper. Results reveal that introduction of fast growing leguminous species affected species diversity and hampered the regeneration and growth of native vegetation, due to the dense shade of the over-storey component. Species diversity (H') levels increased with the opening of the canopy at different elevations, with the highest diversity (1·624) being recorded on the hilltop with Acacia Catechu and Wedlandia exserta dominating the area. Enumeration of various species in the growth stages indicated a large population in the pole stage followed by tree and sapling stage indicating scattered regeneration mostly by 1-2 species. Tree associations in the lower, middle and upper reaches were of Leucaena leucocephala—A. Catechu, A. Catechu—Boehemeria rugulosa and A. Catechu-W. exserta, respectively. Seeded A. Catechu plants now in the tree stage have attained an average height of 5·5 m and dbh of 10·44 cm with an average wood volume of 0·027 m3 in a period of 16–21 years. At current prices of heartwood (US $435 per m3) of A. Catechu which is used in the manufacture of ‘kattha’, the investments made two decades ago (US$ 13043) in the rehabilitation of the limestone mine are fairly justified. Copyright © 2010 John Wiley & Sons, Ltd.