Standardization of Infrared Pre-treatment Process for Detoxification of Cottonseed Meal and Enhancement of Protein Extraction
Shalaka Kalamnurikar1*, Smita Khodke1 and Dattatreya Kadam2
1Department of Processing and Food Engineering CAET, VNMKV, Parbhani. (MS), India 3Principal Scientist and Head ICAR-Central Institute for Research on Cotton Technology, Mumbai. (MS), India
*Corresponding author
Abstract:
Cottonseed meal (CSM) is a protein-rich by-product whose utilization is restricted by the presence of toxic free gossypol. This study optimized infrared (IR) pre-treatment conditions to reduce free gossypol while preserving protein quality for efficient extraction. CSM was treated at 50–120 °C for 1–5 min under controlled conditions and analyzed for free gossypol, total gossypol, and protein content. Free gossypol decreased progressively up to 70 °C, reaching a minimum of 0.036 % at 70 °C for 5 min, but increased at higher temperatures (0.111 % at 120 °C), indicating disruption of protein–gossypol complexes. Total gossypol slightly decreased up to 70 °C (≈1.21 %) and increased thereafter (≈2.01 % at 120 °C). Protein content improved significantly at moderate temperatures, with maximum extractable protein (≈60–65 %) at 70 °C for 2–3 min, whereas severe heating (≥90 °C) caused substantial protein denaturation. Overall, IR pre-treatment at 70–80 °C for 2–5 min was identified as optimal for effective detoxification while maintaining protein integrity, offering a rapid and scalable strategy for cottonseed protein isolation and value-added applications.
Keywords: Cottonseed meal, Gossypol detoxification, Infrared pre-treatment, Protein extraction
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How to cite this article:
Shalaka Kalamnurikar, Smita Khodke and Dattatreya Kadam. 2026. Standardization of Infrared Pre-treatment Process for Detoxification of Cottonseed Meal and Enhancement of Protein Extraction.
Int.J.Curr.Microbiol.App.Sci. 15(3): 149-158. doi:
https://doi.org/10.20546/ijcmas.2026.1503.014
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