Banana peel yellow pigment and extraction method thereof

An extraction method, banana technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve problems such as less research, and achieve the effect of reducing the degree of oxidation, high economic and social value, and reducing losses

Active Publication Date: 2019-11-22
椰枫堂(广州)生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as: extraction of melanin from banana peel (Dong Huaqiang. Extraction method of melanin from banana peel: China, CN105949818A[P].2016-09-21), extraction of polysaccharide from banana peel (W

Method used

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  • Banana peel yellow pigment and extraction method thereof
  • Banana peel yellow pigment and extraction method thereof
  • Banana peel yellow pigment and extraction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Take 5 parts of fresh ripe bananas in parallel, remove the flesh and skin, wash the skin surface, scrape off the soft part of the inner layer of the skin, wash the jelly again, absorb the water, and chop it to a size of 0.3cm×0.3cm The fragments are ready for use, and the fragments are soaked in the color protection solution for 15 minutes. The color protection solution contains 0.05 (w / v)% sodium bisulfite, 0.1 (w / v)% vitamin C and 0.4 (w / v) % citric acid aqueous solution, pull out and pour water, place in the tetrapotassium pyrophosphate aqueous solution of 90 ℃, the concentration of tetrapotassium pyrophosphate aqueous solution is 0.4 (w / v)%, adjust pH value to be 2.5, 2.5, respectively with phosphate buffer. 6.5, 7, 8.5, 10, soak for 30 minutes, filter to get the filter residue for later use;

[0038] (2) Soak the filter residue in step (1) in ethanol and set the volume to 8 times the volume of the filter residue, ultrasonically extract in a constant temperature...

Embodiment 2

[0046](1) Take fresh ripe bananas, remove the flesh and skin, wash the skin surface, then scrape off the soft part of the inner layer of the skin, wash the jelly again, absorb the water, and chop it into 0.3cm×0.3cm pieces for later use. Submerge the fragments in the color protection solution for 15 minutes. The color protection solution is an aqueous solution containing 0.05% sodium bisulfite, 0.1% vitamin C and 0.4% citric acid. In the potassium aqueous solution, adjust the pH value to 6.5 with phosphate buffer solution, the concentration of the tetrapotassium pyrophosphate aqueous solution is 0.6%, soak for 40min, and filter to obtain the filter residue for later use;

[0047] (2) Soak the filter residue in step (1) in ethanol and set the volume to 8 times the volume of the filter residue, and take 7 parallel samples at 0°C, room temperature (25°C), 30°C, 40°C, 50°C , 80°C, 100°C constant temperature water bath conditions, ultrasonic extraction for 30min, the frequency is 3...

Embodiment 3

[0055] (1) Take fresh ripe bananas, remove the flesh and skin, wash the skin surface, then scrape off the soft part of the inner layer of the skin, wash the jelly again, absorb the water, and chop it into 0.3cm×0.3cm pieces for later use. Submerge the fragments in the color-protecting solution for 10 minutes. The color-protecting solution is an aqueous solution containing 0.05% sodium bisulfite, 0.1% vitamin C and 0.4% citric acid. In the potassium aqueous solution, adjust the pH value to 7 with phosphate buffer solution, the concentration of the tetrapotassium pyrophosphate aqueous solution is 0.7%, soak for 40min, and filter to obtain the filter residue for later use;

[0056] (2) Soak the filter residue in (1) in ethanol and set the volume to 10 times the volume of the filter residue, take 6 parallel sample solutions and extract 10, 20, 30, 40, 50 , 60min frequency is 50KHz, suction filtration, obtain extract, measure absorbance with UV-visible absorptiometry respectively a...

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Abstract

The invention belongs to the technical field of pigment extraction, and discloses banana peel yellow pigment and an extraction method thereof. The extraction method comprises (1) chopping clean bananapeel with the soft part in the inner layer removed, then soaking the chopped banana peel in a specially-made color protection solution, then soaking the banana peel in a tetrapotassium pyrophosphateaqueous solution, and performing filtration to obtain filter dregs; (2) sequentially subjecting the filter dregs to extraction using ethanol, acetone, ethyl acetate, petroleum ether, and other solvents, and subjecting solid to repeated extraction with a recovered mixed solvent until extract liquid is colorless; and (3) combining the extracting liquid, concentrating the mixture into paste, adding water into the paste concentrate, ultrasonically mixing the paste concentrate and the water, carrying out rotary evaporation to a viscous state, freezing the product at low temperature, and carrying out vacuum drying to obtain yellow pigment particles. The extraction method disclosed by the invention is simple to operate, low in cost, and high in extraction efficiency, the extracted pigment is stable and not easy to oxidize, the development and utilization value of the banana peel is improved, the resource utilization of the waste banana peel is promoted, and the yellow pigment has relatively high economic value and social value.

Description

technical field [0001] The invention belongs to the technical field of pigment extraction, in particular to a banana peel yellow pigment and an extraction method thereof. Background technique [0002] With people's understanding of chemically synthesized pigments and the improvement of quality of life requirements, natural pigments with nutritional and health effects are an inevitable trend in the development of pigments. Yellow pigments are an important type of natural pigments, accounting for 50% of the market demand for food pigments. At present, the natural yellow pigments used as food pigments in China mainly include gardenia yellow, turmeric and citrus yellow. Among them, gardenia yellow is prone to green change when used for coloring noodle products; Strong stability and coloring, but sensitive to light, heat and iron ions; citrus yellow is extremely sensitive to light and easy to fade. Therefore, the development of a new source of natural yellow pigment is not only ...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00C09B67/0096
Inventor 李平凡张东峰何秀婷沈健范瑞顾宗珠
Owner 椰枫堂(广州)生物科技有限公司
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