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Antioxidant activities of ethanol extracts from seeds in fresh Bokbunja (Rubus coreanus Miq.) and wine processing waste.
Bioresour Technol. 2008 Jul; 99(10):4503-9.BT

Abstract

The antioxidant potential of ethanol extracts from defatted Bokbunja seed wastes generated during wine processing were estimated by radical scavenging abilities (DPPH(*), H(2)O(2), and O(2)(*-)), retardation of lipid oxidation, and iron ion-chelating characteristics. For comparison, ethanol extracts from seeds of fresh ripe Bokbunja fruits were also used. The ethanol extracts from the wine seed waste always showed higher scavenging activities against DPPH(*), H(2)O(2), and O(2)(*-) than those from the fresh seeds. The oxidation of linoleic acid in dimethylsulfoxide at 105 degrees C revealed that the kinetic behavior clearly obeyed pseudo-zero-order regardless of the linoleic acid concentration. The Fe(II)-chelating capacity was determined by the Freundlich isotherm. The results showed high potential and favorability of the two extracts for Fe(II) chelation. The Freundlich chelation capacities (mg(1-1/n)L(1/n)/g) of both ethanol extracts from seeds of fresh Bokbunja and wine processing wastes, tannic acid, and proanthocyanidin from Pinus radiata bark were 100, 224, 260, and 307, respectively. The Fe(III)-chelating properties of the ethanol extracts were considered to be deeply associated with its 3',4',5'-trihydroxyl (galloyl) group as with tannic acid.

Authors+Show Affiliations

Department of Advanced Organic Materials Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17931856

Citation

Ku, Chang Sub, and Sung Phil Mun. "Antioxidant Activities of Ethanol Extracts From Seeds in Fresh Bokbunja (Rubus Coreanus Miq.) and Wine Processing Waste." Bioresource Technology, vol. 99, no. 10, 2008, pp. 4503-9.
Ku CS, Mun SP. Antioxidant activities of ethanol extracts from seeds in fresh Bokbunja (Rubus coreanus Miq.) and wine processing waste. Bioresour Technol. 2008;99(10):4503-9.
Ku, C. S., & Mun, S. P. (2008). Antioxidant activities of ethanol extracts from seeds in fresh Bokbunja (Rubus coreanus Miq.) and wine processing waste. Bioresource Technology, 99(10), 4503-9.
Ku CS, Mun SP. Antioxidant Activities of Ethanol Extracts From Seeds in Fresh Bokbunja (Rubus Coreanus Miq.) and Wine Processing Waste. Bioresour Technol. 2008;99(10):4503-9. PubMed PMID: 17931856.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant activities of ethanol extracts from seeds in fresh Bokbunja (Rubus coreanus Miq.) and wine processing waste. AU - Ku,Chang Sub, AU - Mun,Sung Phil, Y1 - 2007/10/10/ PY - 2007/07/06/received PY - 2007/08/29/revised PY - 2007/08/29/accepted PY - 2007/10/13/pubmed PY - 2008/6/17/medline PY - 2007/10/13/entrez SP - 4503 EP - 9 JF - Bioresource technology JO - Bioresour Technol VL - 99 IS - 10 N2 - The antioxidant potential of ethanol extracts from defatted Bokbunja seed wastes generated during wine processing were estimated by radical scavenging abilities (DPPH(*), H(2)O(2), and O(2)(*-)), retardation of lipid oxidation, and iron ion-chelating characteristics. For comparison, ethanol extracts from seeds of fresh ripe Bokbunja fruits were also used. The ethanol extracts from the wine seed waste always showed higher scavenging activities against DPPH(*), H(2)O(2), and O(2)(*-) than those from the fresh seeds. The oxidation of linoleic acid in dimethylsulfoxide at 105 degrees C revealed that the kinetic behavior clearly obeyed pseudo-zero-order regardless of the linoleic acid concentration. The Fe(II)-chelating capacity was determined by the Freundlich isotherm. The results showed high potential and favorability of the two extracts for Fe(II) chelation. The Freundlich chelation capacities (mg(1-1/n)L(1/n)/g) of both ethanol extracts from seeds of fresh Bokbunja and wine processing wastes, tannic acid, and proanthocyanidin from Pinus radiata bark were 100, 224, 260, and 307, respectively. The Fe(III)-chelating properties of the ethanol extracts were considered to be deeply associated with its 3',4',5'-trihydroxyl (galloyl) group as with tannic acid. SN - 0960-8524 UR - https://www.unboundmedicine.com/medline/citation/17931856/Antioxidant_activities_of_ethanol_extracts_from_seeds_in_fresh_Bokbunja__Rubus_coreanus_Miq___and_wine_processing_waste_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(07)00725-0 DB - PRIME DP - Unbound Medicine ER -