A novel thermostable xylanase from Geobacillus vulcani GS90: Production, biochemical characterization, and its comparative application in fruit juice enrichment

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Tarih

2021

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Blackwell Publishing Ltd

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Xylanases have great attention to act as a potential role in agro-industrial processes. In this study, production, characterization, and fruit juice application of novel xylanase from thermophilic Geobacillus vulcani GS90 (GvXyl) were performed. GvXyl was purified via acetone precipitation and gel-filtration chromatography. The results showed that GvXyl had 1,671.4 U/mg of specific activity and optimally worked at pH 8 and 55°C. It was also active in a wide pH (3–9) and temperature (30–90ºC) ranges. GvXyl was highly stable at 90ºC and relatively stable at pH 3–9. The kinetic parameters of GvXyl were obtained as Km, Vmax, and kcat; 10.2 mg/ml, 4,104 µmol min?1 mg?1, and 3,542.6 s?1, respectively. GvXyl had higher action than commercial xylanase in fruit juice enrichment. These results revealed that GvXyl might possess a potential influence in fruit juice processing because of its high specific activity and great thermal stability. Practical applications: Polysaccharides include starch, pectin, and hemicellulose create problems by lowering fruit juice quality in beverages. To overcome this problem, various clarification processes might be applied to natural fruit juices. Even though chemicals are widely used for this purpose, recently enzymes including xylanases are preferred for obtaining high-quality products. In this study, we reported the production and biochemical characterization of novel thermostable xylanase from thermophilic G. vulcani GS90 (GvXyl). Also, apple and orange juice enrichment were performed with the novel xylanase to increase the quality in terms of yield, clarity, and reducing sugar substance. The improved quality features of apple and orange juices with GvXyl was then compared to commercially available ?-1,4-xylanase. The results revealed that GvXyl might possess a potential influence in fruit juice processing because of its high specific activity and great thermal stability. © 2021 Wiley Periodicals LLC.

Açıklama

Anahtar Kelimeler

fruit juice clarification, Geobacillus vulcani, thermostability, xylanase, Acetone, Citrus fruits, Gel permeation chromatography, Thermodynamic stability, Acetone precipitations, Biochemical characterization, Clarification process, Fruit juice processing, Gel-filtration chromatography, High specific activities, High-quality products, Thermostable xylanase, Fruit juices, Acetone, Application, Citrus Fruits, Gel Permeation Chromatography, Production, Quality, Thermal Stability, Xylanase, enzyme stability, fruit and vegetable juice, Geobacillus, pH, Enzyme Stability, Fruit and Vegetable Juices, Geobacillus, Hydrogen-Ion Concentration

Kaynak

Journal of Food Biochemistry

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

45

Sayı

5

Künye