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Pistachio hull as an alternative pectin source: its extraction and use in oil in water emulsion system. | LitMetric

Pistachio hull as an alternative pectin source: its extraction and use in oil in water emulsion system.

Prep Biochem Biotechnol

Department of Food Engineering, Faculty of Engineering, Gaziantep University, Gaziantep, Turkey.

Published: April 2023

AI Article Synopsis

Article Abstract

In this study, pectin was extracted from the pistachio hull using two methods: conventional extraction and ultrasound-assisted extraction. Water and citric acid solution were tested separately as extraction solvents in both conventional and ultrasound methods. The highest yield (32.3 ± 1.44%) was obtained using a citric acid solution in the conventional extraction method. The pectin extracted with this method had 38.94 g acid per 100 g dry pectin extract. The galacturonic acid and ash contents were 65.81 ± 1.51 and 1.57 ± 0.03%, respectively. The pistachio hull pectin was under the low methoxy pectin group with a 19.29 ± 0.41% degree of esterification. The emulsifying property of the pectin extracted was investigated in an oil-in-water emulsion system at six different pectin concentrations (2, 4, 5, 6, 8, and 10% w/w) and at a fixed oil ratio (20% w/w). Emulsion performance was investigated in terms of emulsion stability, microstructural characteristics, droplet size, and rheological properties. The most stable emulsion was obtained at a 6% pectin concentration. The emulsifying activity index, emulsion stability index, droplet size, consistency index, and flow behavior index were 172.85 ± 0.59 m/g, 158.28 ± 3.41 min, 6.08 ± 0.04 µm, 0.72 ± 0.001 Pa·s, and 0.752 ± 0.005 at this concentration, respectively.

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Source
http://dx.doi.org/10.1080/10826068.2022.2098323DOI Listing

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