Ameeta Ravikumar

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This work evaluates sugarcane bagasse (SCB) conversion, in a biorefinery approach, to coproduce biodiesel and high value products using two novel mangrove fungi. On acid pre-treatment, sugarcane bagasse hydrolysate (SCBH) resulted in a xylitol yield of 0.51 g/g xylose consumed in 72 h by Williopsis saturnus. After SCB pretreatment, sugarcane bagasse residue(More)
BACKGROUND Single cell oils (SCOs) accumulated by oleaginous fungi have emerged as a potential alternative feedstock for biodiesel production. Though fungi from mangrove ecosystem have been reported for production of several lignocellulolytic enzymes, they remain unexplored for their SCO producing ability. Thus, these oleaginous fungi from the mangrove(More)
Single cell oils (SCOs) accumulated by oleaginous yeasts have emerged as potential alternative feedstocks for biodiesel production. As lipid accumulation is species and substrate specific, selection of an appropriate strain is critical. Five strains of Y. lipolytica, a known model oleaginous yeast, were investigated to explore their potential for biodiesel(More)
Curcuma longa rhizome is used extensively in culinary preparations in Far East and South-East Asia. Health benefits of curcuminoids from C. longa as antioxidants, anti-cancer and anti-inflammatory molecules have been well documented. We report here for the first time that Bisdemethoxycurcumin (BDMC) from C. longa, acts as an inhibitor to inactivate human(More)
Recent research has focused on use of waste agro- residues for growth of oleaginous microbial biomass as renewable feedstock for biodiesel. However, pretreatment of lignocellulosic biomass into fermentable sugar is necessary for microbial growth, increasing production costs. An oleaginous fungal isolate from the tropical mangrove wetlands, IBB G4,(More)
BACKGROUND Nanobiotechnology applies the capabilities of biological systems in generating a variety of nano-sized structures. Plants, algae, fungi and bacteria are some systems mediating such reactions. In fungi, the synthesis of melanin is an important strategy for cell-survival under metal-stressed conditions. Yarrowia lipolytica, the biotechnologically(More)
Human pancreatic α-amylase (HPA) inhibitors offer an effective strategy to lower postprandial hyperglycemia via control of starch breakdown. Limonoids from Azadirachta indica known for their therapeutic potential were screened for pancreatic α-amylase inhibition, a known anti-diabetic target. Studies were carried out to reveal their mode of action so as to(More)
The distribution and activity of iodotyrosine dehalogenase 1 (DEHAL1) enzyme was determined during metamorphosis of the frog Microhyla ornata. Immunohistochemical and enzymatic studies in the thyroid, olfactory system, brain, skin, and tail of frog were performed. DEHAL1-positive cells were seen in the olfactory epithelium, the nucleus infundibularis(More)
Natural alkaloid, tryptanthrin (indolo[2,1-b]quinazoline-6,12-dione) and its analogues are found to exhibit potent anti-tubercular activity against MDR-TB. A novel class of indolo[2,1-b]quinazolinones have been synthesized to evaluate their anti-mycobacterial activity. Enoyl-acyl carrier protein reductase (InhA) of Mycobacterium tuberculosis is one of the(More)
Bromobenzene (BrB), a hydrophobic, recalcitrant organic compound, is listed by the environmental protection agencies as an environmental and marine pollutant having hepatotoxic, mutagenic, teratogenic, and carcinogenic effects. The tropical marine yeast Yarrowia lipolytica 3589 was seen to grow aerobically on BrB and displayed a maximum growth rate (μmax)(More)