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  • Volatile flavor compounds, total polyphenolic contents and antioxidant activities of a China gingko wine.

Volatile flavor compounds, total polyphenolic contents and antioxidant activities of a China gingko wine.

Food chemistry (2015-04-07)
Xu Wang, Kelin Xie, Haining Zhuang, Ran Ye, Zhongxiang Fang, Tao Feng
PMID25842306
ABSTRACT

The volatile compounds in gingko wine, a novel functional wine, were extracted by head-space solid phase micro-extraction (SPME) and analyzed by gas chromatography-mass spectrometry (GC-MS) coupled with odor activity value (OAV) and relative odor contribution (ROC) analyses. In addition, the total polyphenolic content of gingko wine was determined using the Folin-Ciocalteu reagent, and its antioxidant capacity was evaluated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) assays. Fifty-eight compounds were tentatively identified, including 13 esters, 10 alcohols, 11 acids, 12 carbonyl compounds, 2 lactones, 2 phenols, and 8 hydrocarbons. Ethyl hexanoate, ethyl pentanoate, nonanal, ethyl butyrate and ethyl heptanoate were the major contributors to the gingko wine aroma based on the results of OAV and ROC. The total phenols content of the gingko wine was 456 mg/L gallic acid equivalents, and its antioxidant capacity was higher than those of typical Chinese liquors analyzed in this paper.

MATERIALS
Product Number
Brand
Product Description
379824
Sigma-Aldrich
Potassium persulfate, 99.99% trace metals basis
57306
Supelco
SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3
57551-U
Supelco
SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 4
57286-U
Supelco
SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
57287-U
Supelco
SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
57307
Supelco
SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3
57321-U
Supelco
SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3
57550-U
Supelco
SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 24 ga, Manual Holder, pk of 4
57324-U
Supelco
SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Manual Holder, pk of 3
57320-U
Supelco
SPME Fiber Assembly Kit, Assortment #2, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3
57325-U
Supelco
SPME Fiber Assembly Kit, Assortment #4, Fused Silica (1 cm), size 24 ga, Autosampler, pk of 3
57285-U
Supelco
SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3
57284-U
Supelco
SPME Fiber Assembly Kit, Assortment, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 4
74860
Sigma-Aldrich
(±)-2-Octanol, ≥96.0% (GC)
57362-U
Supelco
SPME Fiber Assembly Kit, Assortment #5, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 4
G7384
Sigma-Aldrich
Gallic acid, 97.5-102.5% (titration)
D9132
Sigma-Aldrich
2,2-Diphenyl-1-picrylhydrazyl
74858
Sigma-Aldrich
(±)-2-Octanol, ReagentPlus®, ≥99.5% (GC)
281689
Sigma-Aldrich
1,1-Diphenyl-2-picrylhydrazine, 97%
57355-U
Supelco
SPME Fiber Assembly, 60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Manual Holder, pk of 3, purple hub
57335-U
Supelco
SPME Fiber Assembly, 85 μm CAR/PDMS, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 3, light blue hub
57328-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (1cm), needle size 24 ga, Manual Holder, pk of 3, plain gray hub
57345-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, blue hub
57299-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (2cm), needle size 23 ga, Autosampler, pk of 3, notched gray hub
57294-U
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, white hub
57291-U
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, green hub
57295-U
Supelco
SPME Fiber Assembly, 85 μm CAR/PDMS, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, light blue hub
57902-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 1, pink hub
57906-U
Supelco
SPME Fiber Assembly, 85 μm CAR/PDMS, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 1, light blue hub
57914-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, Metal Alloy (2cm), needle size 23 ga, Autosampler, pk of 1, plain gray hub