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Method for preparing maize germ oil through enzymatic degumming

A corn germ oil and enzymatic technology, which is applied in the direction of edible oil/fat, fat oil/fat refining, and fat production, can solve the problems of difficult oil extraction, difficult to grasp the refining stability, etc., and achieves consumption saving and low phospholipid content. , cost-saving effect

Active Publication Date: 2011-10-05
SHANDONG XIWANG FOOD
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Problems solved by technology

[0012] It is worth noting that the commercial corn germ is obviously acidic, and the pH is generally about 4.5 to 5. The crude corn oil is still acidic, especially the unsaturated fatty acid of corn germ oil is high, and it is easy to mix with other macromolecules (protein and carbohydrates). ) combined to form complexes such as lipopolysaccharide and lipoprotein, which makes the oil extraction difficult and the refining stability difficult to grasp. This is the key to the difficulty of processing corn germ oil

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  • Method for preparing maize germ oil through enzymatic degumming
  • Method for preparing maize germ oil through enzymatic degumming
  • Method for preparing maize germ oil through enzymatic degumming

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Embodiment 1

[0049] Optimal experiment of enzymatic degumming process data in corn germ oil refining process

[0050] Experimental plan: through single factor experiments on the type of acid, the amount of acid added, the amount of enzyme added, etc., to explore the best reaction conditions.

[0051]Materials and methods 1.1 Raw materials and reagents Crude corn oil: self-produced, initial phosphorus content 439 mg / kg, free fatty acid content 3.67%; Lecitase® Ultra (E.C.3.1.1.3): A1-position phospholipase, produced by microbial fermentation, Novozyme Company Gift; Other reagents: analytically pure. 1.2 Main instruments FJ-200 high-speed homogenizer, 752 spectrophotometer, electric heating constant temperature water bath, JB90-D powerful electric mixer, etc. 1.3 Phosphorus content analysis Take about 10mL oil sample, in order to facilitate the separation of oil and colloid, first heat to 80°C in water bath, keep warm for 10 minutes, then centrifuge at 5000 rpm for 10 minutes, take 5g of up...

Embodiment 2

[0076] Optimal test parameters for industrial operation

[0077] ⑴ acid reaction.

[0078] Crude oil (flow rate: 8.3 cubic meters / hour) is heated to 55°C through a heat exchanger,

[0079] Citric acid (50% solution) pump flow rate is 13.55 liters / hour;

[0080] Preparation of citric acid solution: 50 kg of citric acid is added to 50 kg of hot soft water at 55°C to fully dissolve;

[0081] Maintain 55°C in the acid reaction tank for more than 30 minutes.

[0082] (2) Alkali addition: 16% NaOH solution, control pH 5-5.3; flow rate of alkali solution is about 12.5 liters / hour;

[0083] (3) Adding enzyme: the flow rate of enzyme solution is 20.472 liters / hour; the amount of enzyme added is 75PPM;

[0084] Enzyme solution preparation: add 5.66 kg of enzyme to 200 kg of cold soft water.

[0085] ⑷ Add water: flow rate 105 liters / hour;

[0086] ⑸ High-speed mixing. After adding the enzyme preparation, the oil enters the enzyme reaction tank through a high-speed shear mixer. H...

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Abstract

The invention relates to a method for preparing maize germ oil through enzymatic degumming. Specifically, phosphatidase is employed for a degumming treatment of maize crude oil during the refining process. Then after deacidification, decoloration, dewaxing and deodorization, refined maize germ oil can be obtained. Wherein, the degumming treatment comprises acid reaction, alkali neutralization, enzyme reaction, and separation, dehydration and drying; the acid in the acid reaction is citric acid, and the enzyme in the enzyme reaction is phosphatidase. In the invention, the key technology for maize germ oil refining is overcome, and the optimum technological conditions for the enzymatic degumming of maize germ oil are optimized. The maize germ oil prepared through enzymatic degumming has the obvious advantages of: low operation temperature and low energy consumption; obviously superior quality of the obtained oil to the quality of oil prepared by traditional methods, and increased product oil yield by over 1%; reduced consumption of acid and alkali chemicals, and reduced waste water generation by 70%-90%, substantially reduced environmental protection cost and markedly improved economic benefit.

Description

technical field [0001] The invention relates to a production method of corn germ oil, specifically a method for refining corn germ oil by adopting an enzymatic degumming process. Background technique [0002] Fat is an essential substance in human daily life. Producing different high-grade edible oils and fats from various oil plants is a subject of research in the contemporary scientific and technological circles. Replacing traditional processing methods with biotechnology means is an important trend to realize ecological resource utilization and sustainable development. [0003] In 2007 / 2008, the total output of global oilseeds was 383.4 million tons, which is a huge industry. Based on consumers' pursuit of nutrition and health and society's need to protect the ecological environment, the development focus of oil products has been extended from single oil to protein, lipid and their important derivatives. Correspondingly, the processing technology is also constantly inn...

Claims

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Application Information

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IPC IPC(8): C11B3/00C11B3/04C11B3/06A23D9/04
Inventor 王勇李伟杨博伍中云王岩崔宝贵刘继强杜军郑长青陈凤飞霍光农赵严
Owner SHANDONG XIWANG FOOD
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