Method for extracting natural phytosterin from residual oil of vegetable fat deodorizing distillate

A technology for deodorizing distillates and vegetable oils, which is applied in the preparation of steroids, chemical instruments and methods, steroids, etc., to achieve the effects of reducing waste residue emissions, considerable economic value, and protecting the environment

Inactive Publication Date: 2010-05-05
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

None of the above patents involves the separation and extraction of natural phytosterols fr

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  • Method for extracting natural phytosterin from residual oil of vegetable fat deodorizing distillate

Examples

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Embodiment 1

[0017] 1Kg of soybean deodorized distillate residue, 500mL of n-propanol and 0.5Kg of calcium hydroxide were added to a reactor with a stirrer, a reflux condenser and a heating mantle, heated to reflux under stirring conditions, and reacted for 3 hours. Add hydrochloric acid to neutralize to pH=5, separate and remove the lower aqueous layer, add 1000 mL of water to wash the oil phase twice. Then 1500 mL of hot n-propanol at 70°C was added to the oil phase. Stir, wait until completely dissolved, let the mixture cool to room temperature, then transfer to the refrigerator, cold crystallize at -4°C for 20 hours, then filter, wash the filter cake with 1000mL n-propanol for 3 times, and drain The solvent is then dried to obtain the crude sterol product.

Embodiment 2

[0019] 1Kg of rapeseed oil deodorization distillate residue, 500mL of water and 0.5Kg of potassium carbonate were added to a reactor with a stirrer, a reflux condenser and a heating mantle, heated to reflux under stirring conditions, and reacted for 5 hours. Add sulfuric acid to neutralize to pH=2, separate and remove the lower aqueous layer, add 1000 mL of water to wash the oil phase twice. Then 1500 mL of hot n-propanol at 70°C was added to the oil phase. Stir, wait until completely dissolved, let the mixture cool to room temperature, then transfer to the refrigerator, cold crystallize at -4°C for 20 hours, then filter, wash the filter cake with 1000mL water for 3 times, drain the solvent and dry That is the crude sterol product.

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Abstract

The invention belongs to the biochemical industry field, particularly relates to a method for extracting natural phytosterin from residual oil of vegetable fat deodorizing distillate. The method comprises the steps of transforming the sterol ester and the glyceride in the residual oil into free sterol and aliphatic acid by catalyzing and decomposing and extracting natural phytosterin by cool resolving and filtering. The filtrate contains a large amount of aliphatic acid so the filtrate can be used to prepare surface active agent or biodiesel. The invention not only changes the discharged residual oil from waste residue into valuable but also solves the problem that China is lack of natural phytosterin resources, with excellent social benefit, environmental benefit and economic benefit. The invention has simple process, easy operation, excellent controllability, low manufacturing cost, industrialization and wide application prospect.

Description

technical field [0001] The invention belongs to the field of biochemical industry, in particular to a method for extracting natural phytosterols from vegetable oil deodorization distillate residue. Background technique [0002] Phytosterols widely exist in plants and plant seeds, and are one of the components of cell membranes in plants. Phytosterol is a natural substance with important physiological value. It is non-toxic and has good emulsification and stability. Therefore, it is widely used in various fields such as medicine, food, daily chemicals, animal growth agents, chemicals, and textiles. related industries. Phytosterols contain sitosterol, campesterol, brassicasterol, stigmasterol and other components, which have strong anti-inflammatory and anti-inflammatory effects and are directly used as anti-inflammatory drugs. It has been proved clinically at home and abroad that natural phytosterols have important physiologically active effects on the human body, can inhib...

Claims

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Application Information

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IPC IPC(8): C07J9/00C07J75/00
Inventor 严峰李建新霍明吴道庚何本桥梁小平曹宇合
Owner TIANJIN POLYTECHNIC UNIV
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