Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes

OBJECTIVE: Wine grape sap or bleeding sap of grapes (GBS) is commonly used in Xinjiang (China) for therapeutic aims. Do variations in composition related to region and variety affect its properties? METHODS: GBS samples originating in various parts of Xinjiang (Turpan, Hotan, Kashgar, and Atush) wer...

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Autores principales: Le, Lv, Umar, Anwar, Iburaim, Arkin, Moore, Nicholas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5669123/
https://www.ncbi.nlm.nih.gov/pubmed/29142440
http://dx.doi.org/10.4103/pm.pm_358_16
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author Le, Lv
Umar, Anwar
Iburaim, Arkin
Moore, Nicholas
author_facet Le, Lv
Umar, Anwar
Iburaim, Arkin
Moore, Nicholas
author_sort Le, Lv
collection PubMed
description OBJECTIVE: Wine grape sap or bleeding sap of grapes (GBS) is commonly used in Xinjiang (China) for therapeutic aims. Do variations in composition related to region and variety affect its properties? METHODS: GBS samples originating in various parts of Xinjiang (Turpan, Hotan, Kashgar, and Atush) were tested for phenols and polyphenols, polysaccharides, saponin, proteins, individual amino acids, and minerals. Their antioxidant activity was measured using ascorbic acid as reference. RESULTS: Polyphenol content varied from 2.6 to 6.6 mg/L, polysaccharides 18.3–816 mg/L, saponin 6.25–106 mg/L, and protein 3.0–22.4 mg/L. Mineral elements and amino acids ranged from 6.20 to 201.2 mg/L and 0.06–118.7 mg/L, respectively. ·OH scavenging ability varied from 70% to over 90%, higher than Vitamin C. Grapes from Turpan had lower antioxidant activity than other grapes even though the polyphenol content was generally higher. CONCLUSION: Bleeding sap of Xinjiang grape is rich in amino acids, polysaccharides, polyphenols, and protein. The contents are different according to the origin, related possibly to species, climate, and environment. Antioxidant effects were not correlated with polyphenol content. SUMMARY: Antioxidant activity of plants or plant extracts is often associated with polyphenols. Bleeding sap of grapes has strong antioxidant properties. Bleeding sap from different grape varieties from different parts of Xinjiang (China) had different polyphenol concentrations. There was no correlation of polyphenol concentrations with antioxidant activity. [Image: see text] Abbreviations used: GBS: Bleeding sap of grapes; PITC: phenyl isothiocyanate.
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spelling pubmed-56691232017-11-15 Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes Le, Lv Umar, Anwar Iburaim, Arkin Moore, Nicholas Pharmacogn Mag Original Article OBJECTIVE: Wine grape sap or bleeding sap of grapes (GBS) is commonly used in Xinjiang (China) for therapeutic aims. Do variations in composition related to region and variety affect its properties? METHODS: GBS samples originating in various parts of Xinjiang (Turpan, Hotan, Kashgar, and Atush) were tested for phenols and polyphenols, polysaccharides, saponin, proteins, individual amino acids, and minerals. Their antioxidant activity was measured using ascorbic acid as reference. RESULTS: Polyphenol content varied from 2.6 to 6.6 mg/L, polysaccharides 18.3–816 mg/L, saponin 6.25–106 mg/L, and protein 3.0–22.4 mg/L. Mineral elements and amino acids ranged from 6.20 to 201.2 mg/L and 0.06–118.7 mg/L, respectively. ·OH scavenging ability varied from 70% to over 90%, higher than Vitamin C. Grapes from Turpan had lower antioxidant activity than other grapes even though the polyphenol content was generally higher. CONCLUSION: Bleeding sap of Xinjiang grape is rich in amino acids, polysaccharides, polyphenols, and protein. The contents are different according to the origin, related possibly to species, climate, and environment. Antioxidant effects were not correlated with polyphenol content. SUMMARY: Antioxidant activity of plants or plant extracts is often associated with polyphenols. Bleeding sap of grapes has strong antioxidant properties. Bleeding sap from different grape varieties from different parts of Xinjiang (China) had different polyphenol concentrations. There was no correlation of polyphenol concentrations with antioxidant activity. [Image: see text] Abbreviations used: GBS: Bleeding sap of grapes; PITC: phenyl isothiocyanate. Medknow Publications & Media Pvt Ltd 2017-10 2017-10-11 /pmc/articles/PMC5669123/ /pubmed/29142440 http://dx.doi.org/10.4103/pm.pm_358_16 Text en Copyright: © 2017 Pharmacognosy Magazine http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.
spellingShingle Original Article
Le, Lv
Umar, Anwar
Iburaim, Arkin
Moore, Nicholas
Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title_full Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title_fullStr Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title_full_unstemmed Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title_short Constituents and Antioxidant Activity of Bleeding Sap from Various Xinjiang Grapes
title_sort constituents and antioxidant activity of bleeding sap from various xinjiang grapes
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5669123/
https://www.ncbi.nlm.nih.gov/pubmed/29142440
http://dx.doi.org/10.4103/pm.pm_358_16
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