A Review on Utilizations of Okra Extracts for Food, Medicine and Environmental Protection

Okra (Abelmoschus esculentus) is rich in nutritive compositions, such as flavones and pectin. It is considered a functional ingredient that can reduce serum sugar and facilitate bowel movement for humans. Extracts of okra obtained by using hot water, acid or alkaline solution, or alcohol are natural, non-toxic and inexpensive for food, medicinal and environmental protection applications. Thus, the industry is developing rapidly in China in recent years. This article summarizes the current status on the processing technology and utilizations of the extracts as starch stabilizer, emulsifier, anti-bacteria nanoparticle, controlled drug release coating, and waste water treatment agent are presented. Proposals for future developments and strategies to overcome existing barriers concerning the extraction and utilization are discussed.