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A comprehensive review on cottonseed oil: Composition, processing, quality control, and biotechnological innovations
Shuangjiao Xu1, Ruinan Yang2, Xi Wei3
1Zhengzhou Research Base, State Key Laboratory of Cotton Bio-breeding and Integrated Utilization, Zhengzhou University, Zhengzhou 450001, China; Institute of Western Agricultural of CAAS, Changji 831100, Xinjiang, China.
Abstract:
Cottonseed oil (CSO) is an important edible oil and a byproduct derived from cotton cultivation. Its competitive cost, along with high smoke point and good oxidative stability, makes it widely used in frying and baking. This review provides a comprehensive analysis of CSO, systematically covering its balanced saturated-to-polyunsaturated profile, the evolution of processing technologies toward greener methods, and advanced analytical techniques like lipidomics for quality control. It further examines how biological breeding technologies such as CRISPR-Cas9 are being applied to develop high-oleic, low-gossypol cotton varieties, improving oil quality at the source. Key findings demonstrate that while enzymatic and physical field-based processing, genetic engineering, and smart monitoring enhance CSO value, challenges persist in nutrient retention and comprehensive safety oversight. Future development should prioritize integrated approaches combining nutritional enhancement via biotechnology, smart sustainable processing, and the advancement of a circular bio-economy to fully realize CSO's potential as a high-value functional lipid.
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