A Review of Cottonseed Protein Chemistry and Non-Food Applications

Abstract

There has been increasing interest in recent years in the use of agro-based raw materials for the production of bio-friendly and sustainable products. Plant-based proteins are among the popular materials being studied. In particular, cottonseed protein (a byproduct of cotton fiber production) is widely available and has useful properties. Although not as well-known as soy protein, cottonseed protein has been shown to be a potentially valuable raw material for numerous applications. In this review, the latest developments in isolation, composition and molecular weight, chemical and enzymatic modifications, and non-food applications are delineated. Among these applications, films and coatings, interfacial and emulsifying applications, adhesives, and bioplastics seem to attract the most attention. A particular effort has been made to cover the literature on these topics in the past 10 years.

Effect of Nanocellulose on the Properties of Cottonseed Protein Isolate as a Paper Strength Agent

“…Cottonseed protein (CSP) have been used for the formulation of biobased products [18][19][20], as animal feed [21,22], in films, coatings and adhesives [19]. Several proteins have been previously reported as binders and strength agents in paper products, such as soy protein [23][24][25][26][27], gelatin, zein, and hydroxyproline-rich glycoprotein [28] and cottonseed protein [29].…”

Cottonseed: A sustainable contributor to global protein requirements

“…These applications include packaging, adhesive, bioplastic, hydrogel, interfacial material, and emulsifying applications (Cheng et al, 2020). The application of CSP as a wood adhesive has been established in the recent past, and it has been reported that the combination of CSP and phosphoric acid is even more effective as a wood adhesive than soy protein .…”

Recent Advances on the Development of Protein-Based Adhesives for Wood Composite Materials—A Review

“…Thus, it represents a valuable agro-industry biobased raw material with numerous applications due to its chemical composition (fibers, proteins, carbohydrates, and lipids) [119]. In terms of amino acid composition, it has nearly the same primary amino acid components as soy protein, those with the highest levels being arginine, glutamic acid, and glutamine [120].…”