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| Nutrient composition analysis of seeds of three Macaranga species |
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| DOI：10.19902/j.cnki.zgyz.1003-7969.240134 |
| KeyWord:Macaranga seed kernel nutritional component nervonic acid γ-aminobutyric acid glutamic acid |
| FundProject:云南省基础研究专项重点项目（202101AS070011）；云南省中青年学术和技术带头人后备人才项目（202105AC160083） |
| Author Name | Affiliation | | ZHANG Guilan1,2, GUO Juan1, YAO Yuling3, TIAN Bo1 | 1.CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical
Garden, Chinese Academy of Sciences, Xishuangbanna 666303, Yunnan, China
2.University of Chinese
Academy of Sciences, Beijing 101408, China
3.College of Traditional Chinese Medicine,
Yunnan University of Chinese Medicine, Kunming 650500, China |
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| Abstract: |
| In order to provide a reference for the improved utilization of Macaranga seeds, the oil, protein, and total sugar contents of the seed kernels of Macaranga indica, Macaranga adenantha, and Macaranga denticulata were determined. The fatty acid composition of the seed kernels, seeds, and testa, as well as the content of free amino acids in the seed kernels were analyzed. The results showed that the oil contents in Macaranga indica, Macaranga adenantha, and Macaranga denticulata seed kernels were 59.70%, 56.68%, and 58.11%, respectively. The protein contents in Macaranga indica, Macaranga adenantha, and Macaranga denticulata seed kernels were 24.64%, 23.78%, and 21.19%, respectively. The total sugar contents in Macaranga indica, Macaranga adenantha, and Macaranga denticulata seed kernels were 7.73%, 8.88%, and 8.78%, respectively. The seed kernels of all three Macaranga species contained nervonic acid and erucic acid as the predominant fatty acids. The nervonic acid contents in Macaranga indica, Macaranga adenantha, and Macaranga denticulata seed kernels were 45.28%, 57.65%, and 22.97%, respectively, while the erucic acid contents were 35.23%, 26.74%, and 54.83%, respectively. Additionally, the oleic acid content in the testa of the three of Macaranga species was the highest, with all levels exceeding 60%. The testa of Macaranga indica and Macaranga adenantha also contained 20.41% and 19.95% linoleic acid, respectively, while Macaranga denticulata testa contained 16.98% palmitic acid. The highest contents of oleic acid were found in the seeds of Macaranga indica and Macaranga adenantha at 32.74% and 37.98%, respectively, while the highest content of erucic acid was found in the seeds of Macaranga denticulata at 40.30%. In addition, the highest free amino acids of seed kernels were γ-aminobutyric acid and glutamic acid. The contents of γ-aminobutyric acid in Macaranga indica, Macaranga adenantha, and Macaranga denticulata seed kernels were 3.11, 2.95 mg/g and 2.93 mg/g, respectively, meanwhile the contents of glutamic acid were 2.29, 4.02 mg/gand 6.60 mg/g, respectively. In conclusion, the seed kernels of Macaranga indica and Macaranga adenantha possess a high oil content and a significant amount of nervonic acid, indicating their potential for the production of nervonic acid. |
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