Longan pectin extraction method
A technology of pectin and longan, which is applied in the field of agricultural production, can solve the problems of complex extraction steps, achieve the effects of maintaining the original color and nutritional content of longan, saving costs, and simple operation
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Embodiment 1
[0017] A method for extracting longan pectin, comprising the following steps:
[0018] Peel the longan and soak it in the color protection solution of citric acid and malic acid, stir, add 3000U / g fructase and 2000U / g cellulase, enzymolyze it at 30°C for 1h, and use 1:3 1-alkane Base-3-methylimidazole sulfate body, reflux extraction at 50°C for 5h, and vacuum-dry the collected pectin at -20°C for 5h.
[0019] The raw material longan needs to adopt the longan produced in Huizhou, Guangdong.
[0020] The color protection solution uses citric acid: malic acid at a ratio of 1:1.
Embodiment 2
[0022] A method for extracting longan pectin, comprising the following steps:
[0023] Peel the longan and soak it in the color protection solution of citric acid and malic acid, stir, add 4000U / g fructase and 3000U / g cellulase, enzymolyze it at 32°C for 2h, and use 1:4 1-alkane Base-3-methylimidazole sulfate body, reflux extraction at 60°C for 7h, and vacuum-dry the collected pectin at -23°C for 6h.
[0024] The raw material longan needs to adopt the longan produced in Huizhou, Guangdong.
[0025] The color protection solution uses citric acid: malic acid at a ratio of 1:2.
Embodiment 3
[0027] A method for extracting longan pectin, comprising the following steps:
[0028] Peel the longan and soak it in the color protection solution of citric acid and malic acid, stir, add 5000U / g of fructose enzyme and 4000U / g of cellulase, enzymolyze it at 36℃ for 1-4h, and use 1:4 of 1 - Alkyl-3-methylimidazole sulfate body, reflux extraction at 70°C for 9h, and vacuum-dry the collected pectin at -26°C for 7h.
[0029] The raw material longan needs to adopt the longan produced in Huizhou, Guangdong.
[0030] The color protection solution uses citric acid: malic acid at a ratio of 1:3.
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