Extraction process for hazelnut kernel oil

Abstract

The invention belongs to the field of food technology, and specifically relates to an extraction process of hazelnut kernel oil. The extraction process of the hazelnut kernel oil provided by the invention has small time consumption and high extraction rate. The extraction process comprises the steps of preparation of hazelnut kernel emulsion, comprising the procedures of smashing peeled hazelnut kernels, immersing with water to make the smashed hazelnut kernels absorb water adequately, and water grinding the hazelnut kernels to obtain the hazelnut kernel emulsion which is used for enzymatic hydrolysis; a peeling process by using NaOH, comprising the procedures of immersing in a 3% NaOH alkali solution for 1.5 min at the temperature of 80 DEG C and peeling; and enzymatic hydrolysis of hazelnut kernel emulsion isolated protein, comprising the procedures of firstly separating hazelnut kernel protein from the hazelnut kernel emulsion, and then performing enzymatic hydrolysis on the hazelnut kernel emulsion isolated protein for extracting oil, wherein the enzymatic hydrolysis time is 1-2 h, an enzymatic hydrolysis temperature is 45-55 DEG C, a pH value is 6.5-7.5, and an enzyme addition amount is 200-1,500 IU / g.

Description

Technical field: [0001] The invention belongs to the technical field of food, and more specifically relates to an extraction process of hazelnut kernel oil. Background technique: [0002] Hazelnut, belonging to the Betaceae Corylus plant, also known as mountain chestnut, pointed grain, hammer and so on. There are about 20 species of Corylus in the world, distributed in Asia, Europe and North America; in China, there are 8 species and 2 varieties, distributed in Northeast, East, North, Northwest and Southwest regions. Hazelnut is an excellent tree species with both fruit and material. Its fruit is shaped like a chestnut, with a hard shell, fat white and round kernel, aroma, and high oil content. It tastes particularly delicious and has a long aftertaste. Therefore, it has become the most popular nut. One of the foods, it has the title of "King of Nuts", and it is also known as the four major nuts together with almonds, walnuts and cashews. [0003] Hazelnut itself is rich i...

AI Technical Summary

Problems solved by technology

[0004] The commonly used extraction methods of hazelnut oil are water immersion method and pressing method. These methods are not only time-consuming and energy-intensive, but also the extraction rate is very low.

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