A method for preparing functional oil and active protein powder from hollyhock

Abstract

The invention provides a method for preparing functional grease and active protein powder from abelmoschus manilhot. The method comprises the following steps: washing abelmoschus manilhot seeds, drying, peeling, and pressing the seeds into a mould; subjecting the seed mould to a sub-critical extraction treatment, separating the solid-liquid phases after the extraction to obtain solid wet meal and a mixed solution; subjecting the mixed solution to an evaporation treatment to remove the extractant to obtain a grease solution; further subjecting the grease solution to molecular steaming refinement to obtain functional grease with an acid value of 0.21 to 0.23 mg / g; removing residual solvent on the solid wet meal which is separated out after the extraction, drying the meal at a low temperature, grinding, and sieving with a 60-mesh sieve so as to obtain the active protein powder. The provided method omits the tedious processes in the conventional grease refining technology such as deacidification, decoloring, and deodorizing through various chemical or physical processes, and has the advantages of short process procedure and high efficiency. The refined oil acid value is 0.21 to 0.23 mg / g after molecular distillation, and reaches the national A-grade edible oil standard. Furthermore, the obtained active protein powder is not processed at a high temperature, and is not modified, so the active protein powder is a high quality raw material for preparing foods with a high protein content.

Description

technical field [0001] The invention relates to the field of agricultural product processing, in particular to a processing method of hollyhock. Background technique [0002] Abelmoschus manihot (L.) medic, also known as wild hibiscus, yellow sunflower, okra, cotton sunflower, etc., belongs to Malvaceae malvaceae, and okra belongs to Abelmoschus medicus. Annual or perennial herb. It is native to the valley grass, field edge or ditch bushes in the Taihang Mountains of Hebei Province. It has strong adaptability and is not strict on the soil, but it is suitable for well-drained and loose sandy loam. [0003] The pharmacological effects of hollyhock have been clearly recorded in medical books of all dynasties, and the history of folk medicine and food dual-use has been thousands of years. Modern pharmacological studies have shown that the pharmacological functions of marshmallow come from a variety of active substances contained in it, among which the content of bioflavonoids ...

AI Technical Summary

Problems solved by technology

Squeeze method, solvent leaching method, water enzymatic method, their main defects are high residual oil, high temperature, time-consuming, complicated refining process, and poor oil quality, protein denaturation in cake is not easy to reuse; Although critical has the advantages of simple process, high extraction rate, quickness, high efficiency, and environmental protection, it is difficult to manufacture high-pressure vessels due to high pressure, small volume, expensive cost, continuous production, and is not suitable for large-scale industrial production.