Xanthan gum production from hydrolyzed rice bran as a carbon source by Xanthomonas spp.
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Dosyalar
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The aim of this study was to utilize rice bran, the main waste product of paddy processing, in xanthan gum production by Xanthomonas campestris fermentation. Deffated rice bran was enzymatically hydrolyzed using cellulase, gluco-amylase, alpha-amylase and xylanase at various pHs and temperatures within 0-12 h. The highest sugar content reached at 35°C, pH 5.5 in 6 h with 41.66%. The enzymatic hydrolysate was used as the carbon source for xanthan gum production by X. campestris NRRL B-1459 and X. campestris pv. campestris. The highest productivities obtained were 21.87 and 17.10 g/L, respectively. Viscosity measurement for the obtained xanthan gums and commercial gum was carried out in gum solutions at various pHs and temperatures. The highest viscosity was reached with 1% gum solutions at 20°C and pH 5.5 for all gums with viscosity values of 470, 131 and 138 mPa sec, respectively. This work has provided relevant scientific information about the use of rice bran, an abundant agroindustrial residue, to produce xanthan gum. © The Korean Society for Microbiology and Biotechnology.
Açıklama
Anahtar Kelimeler
Rice bran, Xanthan gum, Xanthomonas spp., amylase, cellulase, glucan 1,4 alpha glucosidase, polysaccharide, xanthan, xylan endo 1,3 beta xylosidase, article, carbon source, hydrolysis, nonhuman, pH, productivity, rice bran, temperature, viscosity, waste, Xanthomonas campestris, Xanthomonas, Xanthomonas campestris, Xanthomonas campestris pv. campestris
Kaynak
Korean Journal of Microbiology and Biotechnology
WoS Q Değeri
Scopus Q Değeri
Q4
Cilt
40
Sayı
4
