Technique for producing extractive of olive growing leaves

Abstract

A process for preparing the extract of olive leaf includes such steps as low-temp drying in dark condition, pulverizing, extracting in ethanol or methanol by reflux, immersing, seeping, or ultrasonic wave, filtering, vacuum concentrating, vacuum drying to obtain coarse extract, pulverizing, sieving, dissolving in water, filtering, membrane separation, and purifying by ion exchange.

Description

technical field [0001] The invention relates to a production process of olive leaf extract. Background technique [0002] Olive, (Olea europaea L.), also known as foreign olive, European olive, and olean, is a plant of the genus Olea L in the family Oleaceae, and is a world-renowned evergreen tree species for oil and fruit. Olives are native to Asia Minor, and are mainly distributed in the Mediterranean coastal areas, with Spain, Italy, Portugal and Albania as the concentrated production areas. When Premier Zhou Enlai visited Albania in 1964, he decided to introduce and promote olive oil after learning about its special efficacy and wide application. After decades of hard work by our country's olive introduction experts, the introduction has been successful. The olive production in suitable areas has reached the level of origin. According to incomplete statistics, my country's existing olive area is about 400,000 mu (10 million plants). [0003] Olive is a traditional me...

AI Technical Summary

Problems solved by technology

[0004] At present, there are reports in China that olive leaves and olive leaves are used to extract and process olive extracts, but most of them are directly spray-dried after water extraction or alcohol extraction. The content of oleuropein, total phenols and flavonoids in the product is low, which is significantly lower than the standards required by foreign countries. Extract content

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