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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
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.

MATERIALI
N° Catalogo
Marchio
Descrizione del prodotto

Sigma-Aldrich
2,2-Diphenyl-1-picrylhydrazyl
Sigma-Aldrich
Gallic acid, 97.5-102.5% (titration)
Supelco
Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, StableFlex fiber, for use with autosampler, fiber L 2 cm, pk of 3
Supelco
Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, StableFlex fiber, for use with manual holder
Supelco
Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler, fiber L 1 cm, pk of 3
Supelco
Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 24 ga, StableFlex, for use with autosampler, fiber L 1 cm, pk of 3
Supelco
Gruppo in fibra SPME divinilbenzene/carbossene/polidimetilsilossano (DVB/CAR/PDMS), needle size 23 ga, StableFlex, for use with autosampler, fiber L 2 cm, pk of 3
Supelco
Unità fibra SPME polidimetilsilossano (PDMS), df 100 μm(PDMS, for use with autosampler, needle size 23 ga
Sigma-Aldrich
Persolfato di potassio, 99.99% trace metals basis
Supelco
Unità fibra SPME polidimetilsilossano (PDMS), df 100 μm(PDMS, needle size 24 ga, for use with manual holder
Supelco
Unità fibra SPME polidimetilsilossano (PDMS), df 100 μm(PDMS, for use with autosampler, needle size 24 ga
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, StableFlex, for use with autosampler
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 23 ga, StableFlex, for use with autosampler
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, StableFlex, for use with autosampler
Sigma-Aldrich
1,1-Diphenyl-2-picrylhydrazine, 97%
Supelco
Gruppo fibre SPME poliacrilato (PA), df 85 μm(PA, for use with autosampler, needle size 23 ga
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, for use with manual holder
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 23 ga, PDMS/DVB StableFlex, for use with autosampler
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 24 ga, for use with autosampler
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, for use with autosampler
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 85 μm(CAR/PDMS, needle size 24 ga, for use with manual holder, StableFlex fiber
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, needle size 24 ga, StableFlex, for use with manual holder
Supelco
Gruppo fibre SPME poliacrilato (PA), df 85 μm(PA, for use with autosampler, needle size 24 ga
Supelco
Unità fibra SPME polidimetilsilossano (PDMS), df 100 μm(PDMS, for use with manual holder, needle size 23 ga
Supelco
Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS), df 75 μm(CAR/PDMS, needle size 23 ga, for use with autosampler
Sigma-Aldrich
2-Octanol, ≥97%, FG
Supelco
Gruppo fibre SPME polidimetilsilossano/divinilbenzene (PDMS/DVB), df 65 μm(PDMS/DVB, for use with autosampler, needle size 23 ga
Supelco
SPME StableFlex fiber assortment kit, for use with manual holder
Sigma-Aldrich
Ethyl heptanoate, ≥98%, FG