Method for extracting anthocyanidin from aria

Abstract

The invention discloses a method for extracting anthocyanidin from aria. The method is characterized by comprising the following steps of: smashing and pulping the aria to obtain aria pulp; preparing an extraction solvent by using ethanol and distilled water; uniformly mixing the aria pulp and the extraction solvent according to a proper proportion and oscillating by using an oscillator to extract; after oscillating extraction, filtering and centrifuging a mixture of the pulp and the extraction solvent to obtain extract; and performing decompressed concentration on the extract to removal most of ethanol so as to obtain anthocyanidin concentrate. The method is quick and simple, and is environment-friendly since no toxic solvent is adopted for extraction; the obtained extract, monomer anthocyanidin, has high content and can be directly added into foods.

Description

technical field [0001] The invention relates to a method for extracting anthocyanins, in particular to a method for extracting anthocyanins from berry. Background technique [0002] Anthocyanidin, also known as anthocyanidin, is a kind of water-soluble natural pigment widely present in plants in nature, belonging to flavonoid compounds. At present, most of the pigments used in the food industry are synthetic pigments, almost all of which are toxic to varying degrees. Long-term use will endanger human health. Therefore, natural pigments have attracted more and more attention in the field of scientific research. Therefore, the extraction of high-purity anthocyanins provides the necessary characterization conditions and theoretical basis for the in-depth research and development of anthocyanin pigments, and is helpful for its industrial utilization. [0003] The scientific name of the old berry belongs to the Rosaceae (Roseaceae) Sorbus (Sorbus) (Aria), mainly grown in North A...

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Problems solved by technology

Extraction process conditions of blueberry anthocyanins [J], Journal of Dalian Institute of Light Industry, 2007, 26 (3): 196-198); the extraction time of water extraction is long and the efficiency is low

[0006] 2. Auxiliary extraction by other means: On the basis of solvent extraction, auxiliary means such as microwave, ultrasonic, high-voltage pulsed electric field, ultra-high pressure, etc. are added to assist extraction. The extraction rate of microwave-assisted extraction is low. Ultrasonic, ultra-high pressure, supercritical fluid , The extraction efficiency of high-voltage pulsed electric field-assisted extraction is high, but the equipment cost is high, the process conditions are high, and the anthocyanins in the obtained extract will be damaged due to process conditions and reduce the antioxidant capacity, which is difficult to apply in actual production

[0008] 4. Microbial fermentation or enzymatic hydrolysis: use microorganisms or enzymes to degrade the cell wall components, so that the intracellular anthocyanins permeate and diffuse, and extract. This method uses acidified water to protect anthocyanins from degradation or acylation to make them more stable. But it takes a long time, so far it is still in the stage of laboratory operation, the stability is not good, and it has not yet been used to industrialization

[0009] As can be seen from the above description, although the extraction methods of anthocyanins can be seen in many documents, the domestic industry still uses organic solvent extraction as the main method, especially methanol and acetone with the lowest cost as solvents for extraction. It is very difficult to completely remove toxic solvents after extraction by such methods, and it is not easy to solve problems such as environmental pollution and health damage to operators due to the easy volatilization of toxic solvents, so it is indeed necessary to improve

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