Method for jointly extracting hesperidin and pectin from citrus peels

Abstract

The invention discloses a method for jointly extracting hesperidin and pectin from citrus peels, relating to a deep processing method for comprehensive utilization of the citrus peels. The method comprises the steps of preprocessing the raw material, namely dry or fresh citrus peels, then preparing a hesperidin product, and finally preparing a pectin product. The method has the characteristics that production equipment is conventional equipment, production conditions are easy for implementation, and the method is convenient to operate and is suitable for industrial production; the products are high in yield and high in purity (the yield of the hesperidin reaches up to 1.85%-2.72%, the purity of the hesperidin reaches up to 91.56%-95.34%, and the yield of the pectin reaches up to 9.35%-15.56%), and the quality of the products meets the requirements of the market. The method can be widely used for producing hesperidin and pectin products, the hesperidin product prepared by the method can be widely used in fields like anti-inflammation, antioxidation, and maintenance of blood vessel normal osmotic pressure, and the pectin product prepared by the method can be widely used in fields like foods and cosmetics.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization and deep processing of agricultural and sideline products, and in particular relates to a deep processing method for comprehensive utilization of citrus peels. Background technique [0002] In recent years, the annual output of citrus in my country has reached 20 million tons, and citrus peel is a by-product of citrus processing, which accounts for 15% to 30% of the whole fruit weight. Citrus peels are typically processed into animal feed or directly landfilled as waste. Landfilled citrus peels are prone to mildew and odor, and their active ingredients cannot be comprehensively utilized, and will cause serious pollution to the environment; and processing into feed usually requires drying treatment, which consumes a lot of energy and is of low value. There are many useful components in citrus peel that are in urgent need of development and research, such as hesperidin and pectin....

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: ① only crude flavonoids are obtained, without refining into hesperidin products, which cannot meet the market demand; ② flavones are extracted under negative pressure conditions, and the steel thickness of the equipment used is thicker than that of the flavone extraction equipment under normal pressure , large investment in equipment; ③ only extract low molecular weight pectin in citrus peel, high molecular weight pectin is not extracted; ④ do not decolorize the pectin extract, the color and luster of the obtained low molecular weight pectin cannot be guaranteed