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摘要: 以10个不同品种薄壳山核桃Carya illinoensis为试材,采用气相色谱法,测定不同品种的薄壳山核桃的脂肪相对含量及脂肪酸组成成分。测定结果表明:核桃仁中的脂肪相对含量为69.11%~78.19%,出仁率为36.79%~59.47%,脂肪中不饱和脂肪酸>90.00%,其中以油酸最高,其次是亚油酸、棕榈酸、硬脂酸、亚麻酸、花生酸,且油酸和亚油酸存在极显著负相关关系(P<0.01),不同品种的薄壳山核桃油脂肪酸组成相同,但脂肪酸相对含量有显著差异(P<0.05),其单不饱和脂肪酸(油酸)相对含量为73.01%~58.76%;多不饱和脂肪酸以亚油酸为主,相对含量为32.20%~19.69%,且出油率与出仁率呈极显著的正相关关系(P<0.01),同出籽率和果皮厚度没有明显的关系。图3 表3 参12Abstract: This work analyzed the fat composition and the fatty acid composition of ten Carya illinoensis (pecan)cultivars by using gas chromatography and a correlation analysis. Results showed that fat content between 69.11%-78.19% for all pecan kernels,including palmitic(C16:0),stearic(C18:0),oleic(C18:1),linoleic(C18:2),linolenic(C18:3),arachidic(C20:0). And kernel content of the seed ranged from 36.79%-59.49%. Fatty acid content was greater than 90.00% with oleic and linoleic percentages having a significant negative correlation(r = -0.994 2,P<0.01). For pecan oils,the correlation analysis showed significant differences(P<0.05)in the fatty acid contents. The mono unsaturated fatty acid(MUFA) content of the fat was 73.01%-58.76%;the polyunsaturated fatty acid(PUFA) content was 32.20%-19.69%. Also,oil yield and shelling percentage had a significant positive correlation(r= 0.674 0,P<0.01);whereas,rate of seed and peel thickness was not significant.[Ch,3 fig. 3 tab. 12 ref.]
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Key words:
- botany /
- Carya illinoensis (pecan) /
- cultiuars /
- fatty acids /
- gas chromatography
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2013.05.012
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