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| Quality analysis and comprehensive evaluation of Idesia polycarpa |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.230342 |
| KeyWord:Idesia polycarpa Maxim geographic region quality fatty acid composition lipid concomitant principal component analysis |
| FundProject:贵州省科技计划项目（黔科合支撑〔2023〕一般030）；贵州林草发展有限公司横向项目（GZ-LFGS-HZ-026） |
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| Abstract: |
| In order to explore the difference of fruit composition and oil quality of Idesia polycarpa Maxim from different geographic regions, the quality indexes of fruit and oil of Idesia polycarpa Maxim from 7 different geographic regions were determined, the differential analysis of quality indexes of Idesia polycarpa Maxim were analyzed by hierarchical cluster analysis, and the quality of Idesia polycarpa Maxim from different geographic regions was evaluated comprehensively by principal component analysis. The results showed that there were certain degree of differences in contents of oil, protein, ash, crude fiber, total sugar, total phenol and total flavone in fruit of Idesia polycarpa Maxim from different geographic regions. There was no significant difference in fatty acid composition of Idesia polycarpa Maxim oil from different geographic regions, with some difference in fatty acid content, but the content of linoleic acid was the highest (69.92%-74.96%), and the content of unsaturated fatty acid was higher in Hanzhong, Shaanxi Province and Weixin, Yunnan Province. The contents of squalene and vitamin E in Idesia polycarpa Maxim oil from Hanzhong, Shaanxi Province were the highest (170.95, 266.12 mg/100 g, respectively), and the content of β-sitosterol in Idesia polycarpa Maxim oil from Luzhou,Sichuan Province was the highest (472.42 mg/100 g). Idesia polycarpa Maxim oil from Mianyang, Sichuan Province had the highest total phenol content (28.45 mg/100 g). The highest phospholipid content (4.29 mg/100 g) was found in Idesia polycarpa Maxim oil from Rongjiang, Guizhou Province. The cluster analysis results showed that the Idesia polycarpa Maxim from Hanzhong, Shaanxi Province, Luzhou, Sichuan Province, Weixin, Yunnan Province and Renhuai, Guizhou Province were in one category, the Idesia polycarpa Maxim from Guiyang, Guizhou Province, Rongjiang, Guizhou Province and Mianyang, Sichuan Province were in another category. The results of principal component analysis showed that the Idesia polycarpa Maxim in Hanzhong, Shaanxi Province had the highest comprehensive evaluation score, followed by Weixin, Yunnan Province. To sum up, the geographic region is one of the factors affecting the quality of Idesia polycarpa Maxim. |
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