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牦牛干巴和黃牛干巴揮發(fā)性風味特征與差異分析
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國家自然科學基金資助項目(31460403)和“十二五”國家科技支撐計劃資助項目(2011BAD47B00)


Characteristics and Differences Analyses of Volatile Flavour Compounds in Dry-cured Yak and Beef
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    摘要:

    為分析和鑒定牦牛干巴和黃牛干巴中的特征性風味成分,,采用電子鼻和固相微萃取(SPME)/氣相色譜-嗅聞-質(zhì)譜聯(lián)用(GC-O-MS)方法分析了其中的揮發(fā)性風味成分,。電子鼻檢測結(jié)果表明,2組樣品之間的風味差異顯著( p <0.05)。2組樣品中共鑒定出54種揮發(fā)性化合物,,其中,牦牛干巴和黃牛干巴中分別鑒定出42種和 50種,。2組 樣品中共有成分38種,,包括12種烴類、7種醛類,、8種醇類,、3種酮類、2種呋喃類,、1種酯類和5種其他類,,其中,13種成分含量差異顯著( p <0.05),。烴類在牦牛干巴的風味組成中含量最高,,而醛類在黃牛干巴的組成中含量最高。二氫化茚,、十六烷,、乙酸乙酯、乙酸-2-乙基己酯4種成分是牦牛干巴中的特有成分,,3-甲基丁醛,、反-2-辛烯醛、反式-2-壬烯醛,、4-乙基苯甲醛,、3-甲基丁醇、反式-2-癸烯醇,、反式-2-辛烯醇,、1-壬醇、苯乙醇,、醋酸乙烯基酯,、己酸乙酯,、草蒿腦12種成分是黃牛干巴中的特有成分,這些物質(zhì)是2組產(chǎn)品的主要差異性物質(zhì),。脂肪氧化,、氨基酸的Strecker降解及微生物代謝是牛干巴產(chǎn)品風味形成的主要來源。本研究將為牛干巴風味品質(zhì)評價,、生產(chǎn)工藝的控制,、產(chǎn)品的標準化等提供理論依據(jù)。

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    The objectives of this study were to analyze and identify volatile flavour compounds in dry-cured yak and beef by electronic nose and solid phase microextraction/gas chromatography-olfactometry-mass spectrometry (SPME/GC-O-MS). The results obtained from the electronic nose data showed that there were significant differences in flavour characteristics of dry-cured yak and beef ( p <0.05). A total of 54 volatile compounds were identified. Totally 42 and 50 volatile compounds were detected in dry-cured yak and beef, respectively. Only 38 volatile compounds detected in dry-cured yak and beef included hydrocarbons (12), aldehydes (7), alcohols (8), ketones (3), furans (2), esters (1) and others (5). Among these compounds, there were significant differences in content of 13 compounds ( p <0.05). Hydrocarbons were the major compounds in dry-cured yak, and aldehydes were the most abundant volatile compounds in dry-cured beef. Indane, hexadecane, acetic acid ethyl acetate, 2-ethylhexyl ester were detected only in dry-cured yak. 3-methyl -butanal, (E)-2-octenal, (E)-2-nonenal, 4-ethyl-benzaldehyde, 3-methyl-1-butanol, (E)-2-decen-1-ol, (E)-2-octen-1-ol, 1-nonanol, phenylethyl alcohol, acetic acid ethenyl ester, hexanoic acid ethyl ester were detected only in dry-cured beef. Lipid oxidation, Strecker degradation of amino acids and microbial metabolism played an important role in the formation of flavour in dry-cured yak and beef. The results could provide a theoretical basis for flavor quality evaluation, flavor control technology and standardization products of dry-cured yak and beef.

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沙坤,郭江南,郎玉苗,張澤俊,李海鵬,孫寶忠.牦牛干巴和黃牛干巴揮發(fā)性風味特征與差異分析[J].農(nóng)業(yè)機械學報,2015,46(12):233-239. Sha Kun, Guo Jiangnan, Lang Yumiao, Zhang Zejun, Li Haipeng, Sun Baozhong. Characteristics and Differences Analyses of Volatile Flavour Compounds in Dry-cured Yak and Beef[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(12):233-239.

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  • 收稿日期:2015-05-26
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  • 在線發(fā)布日期: 2015-12-10
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