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Position: Home > Articles > Influence of two-stage harvesting on the properties of cold-pressed rapeseed (Brassica napus L.) oils Journal of Integrative Agriculture 2023,22 (1)

Influence of two-stage harvesting on the properties of cold-pressed rapeseed (Brassica napus L.) oils

作者：

Ning, Ning;Hu, Bing;Bai, Chen-yang;Li, Xiao-hua;Kuai, Jie;He, Han-zi;Ren, Yi-lin;Wang, Bo;Jia, Cai-hua;Zhou, Guang-sheng;Zhao, Si-ming

单位：

Huazhong Agr Univ, Coll Food Sci & Technol, Minist Educ, Key Lab Environm Correlat Dietol, Wuhan 430070, Peoples R China;Huazhong Agr Univ, Coll Engn, Wuhan 430070, Peoples R China;Huazhong Agr Univ, Coll Plant Sci & Technol, Minist Agr & Rural Affairs, Key Lab Crop Ecophysiol & Farming Syst Middle Rea, Wuhan 430070, Peoples R China;Wuhan Polytech Univ, Sch Life Sci & Technol, Wuhan 430023, Peoples R China

关键词：

rapeseed;two-stage harvesting;combined harvesting;oil quality

摘要：

Rapeseed (Brassica napus L.) harvesting method is critical since it significantly determines the seed yield, oil quality, and industrial efficiency. This study investigated the influences of harvesting methods on the quality of cold-pressed rapeseed oil of two varieties. Oil color, peroxide value (POV), tocopherol content, fatty acid composition, and polarity of total polyphenols (PTP) contents of two rapeseed varieties in Huanggang and Xiangyang were compared through artificially simulated combined harvesting and two- stage harvesting. Results showed significant differences in the quality of rapeseed oil between the two harvesting methods. The red value (R-value), POV, total tocopherol contents, linoleic and linolenic acid content, and PTP content of the pressed rapeseed oil prepared by the combined harvesting method were about 27.6, 5.7, 15.8, 2.0, 0.5, and 28.6% lower than those of the oil produced from the two-stage harvesting method, respectively. Xiangyang and Huayouza62 performed better in the two regions and two varieties, respectively. To sum up, the rapeseed oil obtained 41-44 days after final flowering of combined harvesting, 35 days after final flowering, and six days of post-ripening of the two-stage harvesting had the best quality.

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Influence of two-stage harvesting on the properties of cold-pressed rapeseed (Brassica napus L.) oils

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