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A Study on Extraction of Pectin from Gardenia Peel

Meng Liu

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Abstract

A study on extraction of pectin from gardenia peel was carried out. Water-soluble pectin was extracted with water first, then acid hydrolysis was used to extract water-insoluble pectin. The orthogonal experiment optimized the extraction process of water-insoluble pectin. The optimum extraction condition is: ratio of water to material 8.25 ∶1 at 90 ℃ for 120 min with pH value 1-1.5. The yield of water-soluble pectin is 13.2 %, yield of water-insoluble is 14.1 %, and total yield is 27.3 %. The pectin product extracted by this process contains methoxyl in a fraction of 4.93 % and pectin in a fraction of 82.4 %.

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What this paper is about

A study on extraction of pectin from gardenia peel was carried out. Water-soluble pectin was extracted with water first, then acid hydrolysis was used to extract water-insoluble pectin. The orthogonal experiment optimized the extraction process of water-insoluble pectin. The optimum extraction condition is: ratio of water to material 8.25 ∶1 at 90 ℃ for 120 min with pH value 1-1.5. The yield of water-soluble pectin is 13.2 %, yield of water-insoluble is 14.1 %, and total yield is 27.3 %. The pectin product extracted by this process contains methoxyl in a fraction of 4.93 % and pectin in a fraction of 82.4 %.

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Available abstract

A study on extraction of pectin from gardenia peel was carried out. Water-soluble pectin was extracted with water first, then acid hydrolysis was used to extract water-insoluble pectin. The orthogonal experiment optimized the extraction process of water-insoluble pectin. The optimum extraction condition is: ratio of water to material 8.25 ∶1 at 90 ℃ for 120 min with pH value 1-1.5. The yield of water-soluble pectin is 13.2 %, yield of water-insoluble is 14.1 %, and total yield is 27.3 %. The pectin product extracted by this process contains methoxyl in a fraction of 4.93 % and pectin in a fraction of 82.4 %.

Key concepts: Pectin, Chemistry, Extraction (chemistry), Yield (engineering), Chromatography, Water extraction, Hydrolysis, Fraction (chemistry)

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