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Optimization of extraction method of polyphenols from barley by response surface methodology

A technology of response surface optimization and extraction method, which is applied to the measurement of color/spectral characteristics, can solve the problems of unreported polyphenols in barley, and achieve the effects of short extraction time, low experimental cost, and high extraction rate of polyphenols

Active Publication Date: 2022-04-26
JILIN BUSINESS & TECH COLLEGE
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a response surface optimization method for extracting polyphenols from barley to solve the technical problem that has not been reported in the prior art on the combination of ultrasound and response surface method to extract polyphenols from barley

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  • Optimization of extraction method of polyphenols from barley by response surface methodology
  • Optimization of extraction method of polyphenols from barley by response surface methodology
  • Optimization of extraction method of polyphenols from barley by response surface methodology

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Embodiment Construction

[0047] 1 Materials and methods

[0048] 1.1 Raw materials and reagents

[0049] Coix seed is produced in Jilin Province, methanol, absolute ethanol, acetone, ethyl acetate, anhydrous sodium carbonate, folin phenol, gallic acid and other chemical reagents.

[0050] 1.2 Instruments and equipment

[0051] Spectrophotometer (Type 721, Shanghai Precision Scientific Instrument Co., Ltd.); ultrasonic cleaning machine (KQ-500E, Kunshan Ultrasonic Instrument Co., Ltd.); low-speed centrifuge (SC-3610, Anhui Zhongke Zhongjia Scientific Instrument Co., Ltd.); Water bath (HH-6, Jintan Keyan Instrument Co., Ltd.); constant temperature drying oven (GZX-9070MBE, Shanghai Boxun Industrial Co., Ltd. Medical Equipment Factory); electronic balance (FA2004N, Shanghai Precision Scientific Instrument Co., Ltd.); pulverizer (JY7114, Shanghai Micro Motor Factory).

[0052] 1.3 Extraction method of barley polyphenols

[0053] Rinse the barley repeatedly with distilled water to remove impurities, dr...

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Abstract

The response surface optimization method for extracting barley polyphenols belongs to the technical field of barley polyphenol extraction. The invention adopts an ultrasonic method to extract coix seed polyphenols, uses gallic acid as a standard product and folinol as a color developing agent, and measures the polyphenol content by a colorimetric method. The experiment investigated the effects of seven factors including solvent type, solid-liquid ratio, solvent volume fraction, extraction temperature, extraction time, extraction times, and sample particle size on the extraction rate of barley polyphenols. On the basis of the single factor experiment, the experimental scheme was designed by using the Box-Behnken response surface analysis method, and the material-liquid ratio, solvent volume fraction, extraction time, and extraction temperature were used as the experimental factors. The effectiveness of the regression model and the influence of each single factor were analyzed, and the factors in the extraction of polyphenols from the seed of Job's tears were optimized to obtain the optimized process conditions for the extraction of polyphenols from the seed of Job's tears. There is a good fit between the measured value and the theoretical value, which is suitable for the extraction of polyphenols from barley.

Description

technical field [0001] The invention belongs to the technical field of barley polyphenol extraction, and in particular relates to a response surface optimization method for extracting barley polyphenols. Background technique [0002] Barley, also known as coix seed, is the seed of coix after shelling. Barley is rich in nutrients, containing about 65% carbohydrates, 17% protein, and 5% fat; in addition to the three major energy substances, barley also contains a variety of Active ingredients, such as barley, vitamins, trace elements, polyphenols, etc., among which the content of polyphenols is higher than that of similar plants. Polyphenols are a class of secondary metabolites with a polyphenolic structure that widely exist in plants and are natural antioxidants. The human body cannot produce polyphenols by itself. Regular intake of polyphenol-rich foods is very necessary, which can effectively reduce the occurrence of cardiovascular diseases. Regular consumption of barley i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 商云帅
Owner JILIN BUSINESS & TECH COLLEGE
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