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中国精品科技期刊2020
白如珍,辜雪冬,刘磊,等. 西藏黑山羊不同性别个体肌肉中脂肪酸组成与特征风味物质差异分析J. 食品工业科技,2026,47(10):1−12. doi: 10.13386/j.issn1002-0306.2025060302.
引用本文: 白如珍,辜雪冬,刘磊,等. 西藏黑山羊不同性别个体肌肉中脂肪酸组成与特征风味物质差异分析J. 食品工业科技,2026,47(10):1−12. doi: 10.13386/j.issn1002-0306.2025060302.
BAI Ruzhen, GU Xuedong, LIU Lei, et al. Analysis of the Differences in Fatty Acid Composition and Characteristic Flavor Substances in the Muscles of Different gender Individuals of Tibetan Black GoatsJ. Science and Technology of Food Industry, 2026, 47(10): 1−12. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2025060302.
Citation: BAI Ruzhen, GU Xuedong, LIU Lei, et al. Analysis of the Differences in Fatty Acid Composition and Characteristic Flavor Substances in the Muscles of Different gender Individuals of Tibetan Black GoatsJ. Science and Technology of Food Industry, 2026, 47(10): 1−12. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2025060302.

西藏黑山羊不同性别个体肌肉中脂肪酸组成与特征风味物质差异分析

Analysis of the Differences in Fatty Acid Composition and Characteristic Flavor Substances in the Muscles of Different gender Individuals of Tibetan Black Goats

  • 摘要: 为探究不同性别西藏黑山羊肌肉品质特性的差异,本研究选取西藏黑山羊公羊和母羊为研究对象,分析其不同部位(前腿、后腿和背最长肌)肌肉中脂肪酸组成及挥发性风味物质的差异。结果表明:不同部位的肌肉中,C18:1、C18:0和C16:0是主要的脂肪酸成分,其中公羊背最长肌的C6:0、C8:0、C18:0、C20:0、C21:0和C14:1含量均显著高于母羊(P<0.05),而公羊后腿的C20:1含量也显著高于母羊(P<0.05)。此外,公羊肌肉中的单不饱和脂肪酸(MUFA)含量(2.06±1.22 g/100 g)显著高于母羊(1.57±0.51 g/100 g)。采用顶空固相微萃取-气相色谱-质谱联用技术(HS-SPME-GC-MS)分析挥发性风味物质,共鉴定出75种化合物,包括醛类(18种)、酯类(13种)、酮类(6种)、酸类(5种)、烷烃类(3种)、烯烃类(3种)、醇类(2种)及其他类(25种)。母羊肉中醛类物质总体含量显著高于公羊(P<0.05),而公羊肉中酯类和醇类物质含量则显著高于母羊(P<0.05)。通过主成分分析(PCA)、聚类热图分析及正交偏最小二乘判别分析(OPLS-DA)发现,正己醛、正庚醛、苯甲醛、3-羟基-2-丁酮、2-乙基呋喃、甲苯、乳酸乙酯和正壬醛等物质是西藏黑山羊肉特征风味的关键贡献成分。性别上,公羊由于脂肪酸、风味前体物质含量适中,在风味接受度及营养价值方面显著优于母羊(P<0.05)。本研究为西藏黑山羊肉质评价及风味调控提供了理论依据。

     

    Abstract: To explore the differences in muscle quality characteristics between male and female Tibetan black goats, this study selected male and female Tibetan black goats as research subjects and analyzed the differences in fatty acid composition and volatile flavor substances in different muscle parts (front legs, hind legs, and longissimus dorsi). The results showed that C18:1, C18:0, and C16:0 were the main fatty acid components in different muscle parts. The contents of C6:0, C8:0, C18:0, C20:0, C21:0, and C14:1 in the longissimus dorsi of male goats were significantly higher than those of female goats (P<0.05), and the content of C20:1 in the hind legs of male goats was also significantly higher than that of female goats (P<0.05). In addition, the content of monounsaturated fatty acids (MUFA) in the muscle of male goats (2.06±1.22 g/100 g) was significantly higher than that of female goats (1.57±0.51 g/100g). Using headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) to analyze volatile flavor substances, a total of 75 compounds were identified, including aldehydes (18), esters (13), ketones (6), acids (5), alkanes (3), alkenes (3), alcohols (2), and others (25). The total content of aldehydes in female goat meat was significantly higher than that in male goat meat (P<0.05), while the contents of esters and alcohols in male goat meat were significantly higher than those in female goat meat (P<0.05). Principal component analysis (PCA), cluster heatmap analysis, and orthogonal partial least squares discriminant analysis (OPLS-DA) showed that hexanal, heptanal, benzaldehyde, 3-hydroxy-2-butanone, 2-ethylfuran, toluene, ethyl lactate, and nonanal were the key contributing components to the characteristic flavor of Tibetan black goat meat. In terms of gender, male goats, due to their moderate content of fatty acids and flavor precursor substances, were significantly superior to female goats in terms of flavor acceptance and nutritional value (P<0.05). This study provides a theoretical basis for the evaluation of the meat quality and flavor regulation of Tibetan black goats.

     

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