Publications by authors named "Rizwana Parveen Rani"

Cellulosomes, which are multienzyme complexes from anaerobic bacteria, are considered nature's finest cellulolytic machinery. Thus, constructing a cellulosome in an industrial yeast has long been a goal pursued by scientists. However, it remains highly challenging due to the size and complexity of cellulosomal genes.

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  • Researchers isolated and purified a hetero-exopolysaccharide (LgEPS) from Lactobacillus gasseri FR4 found in native chickens, identifying its molecular weight as 1.86×10 Da.
  • Analysis showed LgEPS primarily consists of glucose, mannose, galactose, rhamnose, and a small amount of fucose, along with confirmation of its functional groups through FT-IR.
  • Additionally, LgEPS demonstrated potential health benefits, showing antioxidant, antibacterial, and antibiofilm activity against foodborne pathogens, suggesting its applications in the food industry as an antimicrobial and thickening agent.
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  • * A specific BSH gene was identified, cloned, and its activity and characteristics were analyzed, showing optimal function at 52°C and pH 5.5, and susceptibility to inhibitors like riboflavin and penicillin V.
  • * The study suggests that combining the probiotic FR4 with riboflavin could be a promising substitute for antibiotics in poultry feed, as it may mitigate the negative effects of BSH activity.
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This study focuses on isolation, screening, and characterization of novel probiotics from gastrointestinal tract of free-range chicken (). Fifty seven colonies were isolated and three isolates (FR4, FR9, and FR12) were selected and identified as FR4, FR9, and FR12 by 16S rRNA sequencing. Three strains were able to survive in stimulated acidic and bile conditions and inhibit the growth of pathogens.

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Hetero-exopolysaccharide secreted by Bacillus tequilensis FR9 (BtqEPS), was produced and fractioned on DEAE-Sepharose and phenyl sepharose CL-6B column. HPLC analysis revealed the existence of five monosaccharides including glucose, galactose, mannose, arabinose and xylose. FT-IR spectroscopy confirmed the presence of carboxyl and hydroxyl groups.

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Protease enzymes in tannery industries have enormous applications. Seeking a potential candidate for efficient protease production has emerged in recent years. In our study, we sought to isolate proteolytic bacteria from tannery waste dumping site in Tamilnadu, India.

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This study sought to evaluate the probiotic potential of lactic acid bacteria (LAB) isolated from traditionally fermented south Indian koozh and gherkin (cucumber). A total of 51 LAB strains were isolated, among which four were identified as Lactobacillus spp. and three as Weissella spp.

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As world population increases, lactic acid fermentation is expected to become an important role in preserving fresh vegetables, fruits, and other food items for feeding humanity in developing countries. However, several fermented fruits and vegetables products (Sauerkraut, Kimchi, Gundruk, Khalpi, Sinki, etc.) have a long history in human nutrition from ancient ages and are associated with the several social aspects of different communities.

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