Pectin and cellulose extracted from coffee pulps and their potential in formulating biopolymer films

Dao, Duy N.; Le, Phuong Hong; X., Duy; Dang, Thinh M. Q.; Nguyen, Sinh K.; Nguyen, Viet

doi:10.1007/s13399-022-02339-x

Cited by 11 publications

(4 citation statements)

References 29 publications

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“…Therefore, temperature should be carefully considered because the degradation and the loss of antioxidant capacity could occur when being treated at a high temperature for a long time. 5 Other studies mentioned a decreased tendency of extraction efficiency when extraction temperature was higher than 30 • C 20 or 35 • C. 17 The differences in results obtained in our study with those reported in previous studies should be considered in other specific conditions such as type of materials, loading samples, particle size or pH which was not studied in our research.…”

Section: Fitting the Model And Analysis Of Response Surface Plots For...contrasting

confidence: 79%

“…The highest AA of polyphenols extracted from coffee pulp was obtained at 50 °C, then decreased afterward. Therefore, temperature should be carefully considered because the degradation and the loss of antioxidant capacity could occur when being treated at a high temperature for a long time 5 . Other studies mentioned a decreased tendency of extraction efficiency when extraction temperature was higher than 30 °C 20 or 35 °C 17 .…”

Section: Resultsmentioning

confidence: 99%

“…Coffee is an important beverage product, but coffee industry processing also generates large amounts of solid waste, in which coffee pulp contains 29% of coffee cherry that causes the environmental issues. 1,2 However, coffee pulp is especially rich in useful bioactive compounds [3][4][5][6] such as gallic acid, chlorogenic acid, caffeic acid, and caffein. [7][8][9] Therefore, additional efforts to valorize coffee pulp are needed to develop for the sustainable solution.…”

Section: Introductionmentioning

confidence: 99%

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Extracting and purifying polyphenols from coffee pulp (Coffee arabica L.) using aqueous two‐phase systems

Le,

Nguyen,

Pham

et al. 2024

Vietnam Journal of Chemistry

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Coffee pulp, the major by‐product of the beverage industry, is considered as an environmental threat, but also possesses high amounts of bioactive compounds. The extraction of these compounds by using conventional methods and solvents usually accompanies impurities. Here, an aqueous two‐phase system (ATPS) was optimized to extract and purify polyphenols from coffee pulp. Key affecting factors include phase system composition (ethanol and ammonium sulfate), extraction time and temperature while the quality of product was evaluated based on total phenolic content (TPC) and antioxidant activity (AA). The final optimized conditions were at 50 °C for 60 min using the ATPS of ethanol 37.7% (w/w) and ammonium sulfate 25% (w/w). TPC and AA at the optimal conditions were 434.63 ± 25.40 mg GAE/g dw and 622.71 ± 9.65 mg TE/g dw, respectively, which were higher than the results of the extract only used ethanol as the extraction solvent. The results showed that ATPS was a valuable method to extract and purify coffee bioactive compounds.

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Section: Fitting the Model And Analysis Of Response Surface Plots For...contrasting

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extracting and purifying polyphenols from coffee pulp (Coffee arabica L.) using aqueous two‐phase systems

Le,

Nguyen,

Pham

et al. 2024

Vietnam Journal of Chemistry

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“…Coffee pulp is generally considered to be a waste product that represents approximately 29% of the dry weight of the coffee cherry [1]. However, this agricultural by-product still contains high value-added compounds such as carbohydrate, pectin, cellulose, hemicellulose, and bioactive compounds [2,3]. The recovery of such value-added compounds brings not only economic benefits but also helps to reduce environmental threats.…”

Section: Introductionmentioning

confidence: 99%

Purification of Coffee Polyphenols Extracted from Coffee Pulps (Coffee arabica L.) Using Aqueous Two-Phase System

Le,

Ho,

et al. 2023

Molecules

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Coffee pulp is an abundant residue from the coffee industry, but it still contains large amounts of valuable compounds such as polyphenols. The extraction of polyphenols from coffee pulp by the conventional method is accompanied by contaminated compounds. This study, therefore, applied an aqueous two-phase system consisting of different ratios of ethanol/ammonium sulfate to eliminate impurities from coffee-pulp crude extract. The purification efficiency was evaluated via total polyphenol content, antioxidant activity and two major polyphenols in coffee pulps including chlorogenic acid and caffeic acid. Results showed that phenolic compounds mostly predominated in the alcohol-rich phase in which the antioxidant activity was greatly increased after the purification process. Compared to un-purified crude-coffee extract, the antioxidant activity of the purified samples increased approximately 34%, which was assumed to occur due to the slight increase of chlorogenic acid and caffeic acid. Fourier-transform infrared spectroscopy supported the effectiveness of the purification process by eliminating some impurities.

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Value-Added Products from Agricultural Wastes: Pectins from Cocoa Husk, Coffee Pulp, Soybean Hulls and Grape Pomace

Colodel

Reichembach

Petkowicz

2023

Sustainable Development and Biodiversity

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Pectin and cellulose extracted from coffee pulps and their potential in formulating biopolymer films

Cited by 11 publications

References 29 publications

Extracting and purifying polyphenols from coffee pulp (Coffee arabica L.) using aqueous two‐phase systems

Extracting and purifying polyphenols from coffee pulp (Coffee arabica L.) using aqueous two‐phase systems

Purification of Coffee Polyphenols Extracted from Coffee Pulps (Coffee arabica L.) Using Aqueous Two-Phase System

Value-Added Products from Agricultural Wastes: Pectins from Cocoa Husk, Coffee Pulp, Soybean Hulls and Grape Pomace

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