A review on pectin extraction methods using lignocellulosic wastes

Agricultural lignocellulose wastes are highly applicable as a substrate for the production of value-added products (e.g., pectin). Pectin is widely used in the food industry, pharmaceutical, and cosmetic products. So, pectin extraction is of importance. The common method for pectin extraction is based on the acid hydrolysis process. Recently, the use of novel methods is necessary due to the limitation of conventional approaches. This review article aims to consider different methods of pectin extraction from lignocellulosic wastes. In the present article after an overview of the application of pectin in the food industry, pectin effects on human health are mentioned. Afterward, conventional (acidic extraction) and novel (microwave, ultrasound, subcritical water, high pressure, and enzymatic) extraction methods of pectin are discussed in detail. The information of this article could be useful for investigators who want to apply lignocellulosic wastes for pectin extraction.