Method for detoxifying de-oiled jatropha curcas kernels

Abstract

The invention discloses a method for detoxifying de-oiled jatropha curcas kernels. The method comprises the following steps of: crushing the de-oiled jatropha curcas kernels obtained by cold pressing into granules with granule diameter of less than 40 meshes, and performing dry steaming on the granules for 20 to 30 minutes at the temperature of between 115 and 121 DEG C under the pressure of between 0.05 and 0.1MPa; adding industrial ethanol into the granules in a weight / volume ratio of 1:3-1:5, performing ultrasonic oscillation for 25 to 30 minutes in ultrasonic wave, repeating the ultrasonic oscillation once, filtering, and separating oil meal and ethanol phase to obtain detoxified jatropha curcas kernels and ethanol-soluble crude phorbol ester product. The method has remarkable detoxifying effect, the process is simple and convenient, the extraction period is short, and the method is energy-saving and environmentally-friendly; the used ethanol is convenient and easily obtained and can be reclaimed to reduce the cost; and the method does not produce toxicity, is safe, is a renewal method for detoxifying the jatropha curcas kernels, and can be greatly popularized and applied.

Description

technical field [0001] The invention relates to a detoxification method of jatropha curcas seed kernels after deoiling, in particular to a method for detoxification of phorbol ester, a toxic component contained therein. Background technique [0002] my country's feed industry started in the late 1970s and has been in a state of rapid development so far. It has not only become the second largest feed production country in the world, but also the largest feed consumer country in the world. The demand for feed is increasing day by day. However, as we all know, not only the animal protein resources used for feed are very short, but also the plant protein is limited, which leads to rising prices and seriously hinders the development of the feed industry. Therefore, it is imperative to develop new feed plant protein. [0003] Jatropha curcas L. belongs to Euphorbiaceae (Euphorbiaceae) Jatropha deciduous shrubs or small trees, native to tropical America, distributed in tropical and...

AI Technical Summary

Problems solved by technology

Although this method can effectively remove a large amount of phorbol esters through five extractions, because the extractant used in it is industrial methanol, it cannot be guaranteed that the methanol in the obtained vegetable protein can be completely evaporated in the post-treatment, so that the remaining Methanol is too toxic and does not conform to the principle of feed safety, so it cannot be directly used as a raw material for animal feed

In addition, this method needs to be extracted at least 5 times to achieve the expected detoxification effect, so not only the workload is large, the extraction cycle is long, but also the manpower, raw materials, and energy consumption are high, which does not meet the principle of energy saving

In addition, the extraction results are neither verified by high-performance liquid chromatography nor supported by animal experiments, nor are there corresponding experiments to prove whether the nutritional components of the detoxified oil meal have changed

Images