Method for extracting longan seed polyphenol

Abstract

The invention discloses a method for extracting longan seed polyphenol, and belongs to the field of natural product extraction method. The method comprises the following steps: 1) peeling and crushing; 2) filtering; 3) extracting; and 4) concentrating to obtain the polyphenol. The invention has the advantages of reasonable control of drying level of the longan seed, reduction of activity of polyphenol oxidase in longan seed, reduction of the loss of polyphenol in the production process, easiness to operate, high extraction efficiency and low production cost. The method has important meaning for expanding the use of longan seed and increasing their added value, not only is conducive to the full use of longan resources, but also helps promoting the development of longan planting.

Description

technical field

[0001] The invention belongs to the field of extraction methods of natural products, in particular to a method for extracting polyphenols from longan seeds. Background technique

[0002] Longan, the fruit of Sapindaceae plant longan, is warm in nature and sweet in taste, nourishes the heart and spleen, nourishes qi and blood, and has a good nourishing and nourishing effect. It can be used for insomnia, forgetfulness, palpitations, dizziness and other diseases caused by deficiency of heart and spleen, deficiency of qi and blood. China It is a big longan producing country in the world. It is mainly produced in Guangdong, Guangxi, Fujian, Sichuan and other places. The planting area exceeds 10,000 tons, and the annual output value is nearly 100 million yuan, ranking first in the world. Through comprehensive utilization, the discarded longan cores weigh hundreds of thousands of tons every year.

[0003] Longan kernels are rich in natural products such as starch, ...