Recycle Technology for Potato Peel Waste Processing: A Review

AbstractActing as the fourth main crop behind rice, wheat and maize, potato plays an important role in human diet allover the world. Food processing industries particularly potato chips manufacturing industries generate a huge volume of potato peel as by product which is usually discarded causing environmental concern due to its microbial spoilage. Traditionally potato peel waste is used for producing low value animal feed, fertilizer, which causes waste of abundant nutritive materials having the properties of antioxidant, antibacterial, apoptotic, chemopreventive and anti-inflammatory. This review introduces principals and technologies of several advanced development of potato peel waste in food processing, phyto-pharmaceutical and biosynthesis industries, analyzes their advantages and disadvantages from the standpoint of popularization and economy, thus evaluates possibilities of future mass production of these products. Based on comparison of of their possibilities, this review points out that biogas production,lactic acids, phenolic acids extraction from potato peel waste has better prospect for their contribution to food strategy in China, meanwhile ultrasonic extraction of steroidal alkaloids may have great potential in pharmaceutical field. Problem of higher cost still exists in these industries, thus future efforts should be put in lowering cost of all these extracting methods, and driving the further development of potato peel waste into practice