title: Antioxidant activities of Vine Tea (Ampelopsis grossedentata) extract and its major component dihydromyricetin in soybean oil and cooked ground beef.
abstract: Antioxidant activities of Ampelopsis grossedentata extract (EXT) and its major component dihydromyricetin (DHM) were analysed and compared with BHA in two model systems, soybean oil and cooked ground beef. Oxidation of soybean oil samples was measured using peroxide value, anisidine value, headspace volatiles and headspace oxygen content. TBARS (thiobarbituric acid reactive substances) test was used to measure the oxidation of cooked beef. DHM was more potent than BHA in preventing soybean oil oxidation. EXT was not as effective as BHA or DHM in soybean oil. In cooked beef, all three antioxidants significantly lowered oxidation compared to control, but there were no differences between the three. Mechanisms and potentials of EXT and DHM as natural food antioxidants need to be studied on a case-by-case basis.
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
authors.forename: Liyun
authors.initials: L
authors.lastname: Ye
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
authors.forename: Hengjian
authors.initials: H
authors.lastname: Wang
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
authors.forename: Susan E
authors.initials: SE
authors.lastname: Duncan
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
authors.forename: William N
authors.initials: WN
authors.lastname: Eigel
authors.affiliation: Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA. Electronic address: okeefes@vt.edu.
authors.forename: Sean F
authors.initials: SF
authors.lastname: O'Keefe
mesh_terms: D032421:Ampelopsis / Q000737:chemistry* / Q000378:metabolism; D000818:Animals; D000975:Antioxidants / Q000737:chemistry*; D002083:Butylated Hydroxyanisole / Q000737:chemistry; D002417:Cattle; D002851:Chromatography, High Pressure Liquid; D044948:Flavonols / Q000032:analysis / Q000737:chemistry*; D008460:Meat / Q000032:analysis*; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis; D010936:Plant Extracts / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry* / Q000378:metabolism
chemical_list: D000975:Antioxidants; D044948:Flavonols; D010636:Phenols; D010936:Plant Extracts; D002083:Butylated Hydroxyanisole; D013024:Soybean Oil; C472036:dihydromyricetin