Chandrasekaran, M; Bijina, B; Sreeja, Chellappan; Jissa, Krishna G; Soorej, Basheer M; Elyas, K K; Ali, Bahkali H(Elsevier, April 18, 2011)
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Abstract:
Protease inhibitors are well known to have several applications in medicine and biotechnology.
Several plant sources are known to return potential protease inhibitors. In this study plants
belonging to different families of Leguminosae, Malvaceae, Rutaceae, Graminae and Moringaceae
were screened for the protease inhibitor. Among them Moringa oleifera, belonging to the family
Moringaceae, recorded high level of protease inhibitor activity after ammonium sulfate fractionation.
M. oleifera, which grows throughout most of the tropics and having several industrial and
medicinal uses, was selected as a source of protease inhibitor since so far no reports were made
on isolation of the protease inhibitor. Among the different parts of M. oleifera tested, the crude
extract isolated from the mature leaves and seeds showed the highest level of inhibition against trypsin.
Among the various extraction media evaluated, the crude extract prepared in phosphate buffer
showed maximum recovery of the protease inhibitor. The protease inhibitor recorded high inhibitory
activity toward the serine proteases thrombin, elastase, chymotrypsin and the cysteine
Description:
Saudi journal of biological sciences(2011) 18,273-281
Chandrasekaran, M; Nagendra, Prabhu G(Tecpar, 1999)
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Abstract:
L - Glutaminase, a therapeutically and industrially important enzyme, was produced from marine Vibrio costicola
by a novel solid state fermentation process using polystyrene beads as inert support. The new fermentation system
offered several advantages over the conventional systems, such as the yield of leachate with minimum viscosity and
high specific activity for the target product besides facilitating the easy estimation of biomass. The enzyme thus
produced was purified and characterised. It was active at physiological pH, showed high substrate specificity
towards L - glutamine and had a Km value of 7.4 x 10-2 M. It also exhibited high salt and temperature tolerance
indicating good scope for its industrial and therapeutic applications
Description:
Brazilian Archives of Biology and Technology 42(3),pp-363-368
Chandrasekaran, M; Nagendra, Prabhu G(Rapid Science Publishers, 1995)
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Abstract:
Polystyrene beads, impregnated with mineral salts/glutamine medium as inert support, were used to produce
L-glutaminase from Vibrio costicola by solid-state fermentation. Maximum enzyme yield, 88 U/g substrate, was
after 36 h. Glucose at 10 g/kg enhanced the enzyme yield by 66%. The support system allowed glutaminase to
be recovered with higher specific activity and lower viscosity than when a wheat-bran system was used
Description:
World Journal of Microbiology & Biotechnology 11,683-684
Chandrasekaran, M; Manzur Ali, P P; Rekha Mol, K R; Sapna, K; Sarita,G Bhat(Springer, March 11, 2014)
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Abstract:
Protease inhibitors can be versatile tools mainly in the fields of medicine, agriculture and
food preservative applications. Fungi have been recognized as sources of protease inhibitors,
although there are only few such reports on mushrooms. This work reports the purification and
characterization of a trypsin inhibitor from the fruiting body of edible mushroom Pleurotus
floridanus (PfTI) and its effect on the activity of microbial proteases. The protease inhibitor was
purified up to 35-fold by DEAE-Sepharose ion exchange column, trypsin-Sepharose column and
Sephadex G100 column. The isoelectric point of the inhibitor was 4.4, and its molecular mass was
calculated as 37 kDa by SDS-PAGE and 38.3 kDa by MALDI-TOF. Inhibitory activity confirmation
was by dot-blot analysis and zymographic activity staining. The specificity of the inhibitor
toward trypsin was with Ki of 1.043×10−10 M. The inhibitor was thermostable up to 90 °C with
maximal stability at 30 °C, active over a pH range of 4–10 against proteases from Aspergillus
oryzae, Bacillus licheniformis, Bacillus sp. and Bacillus amyloliquefaciens. Results indicate the
possibility of utilization of protease inhibitor from P. floridanus against serine proteases
Description:
Appl Biochem Biotechnol (2014) 173:167–178
DOI 10.1007/s12010-014-0826-1
Chandrasekaran, M; Suresh, P V(Rapid Science Publishers, 1998)
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Abstract:
Prawn waste, a chitinous solid waste of the shell®sh processing industry, was used as a substrate for chitinase
production by the marine fungus Beauveria bassiana BTMF S10, in a solid state fermentation (SSF) culture.
The process parameters in¯uencing SSF were optimized. A maximum chitinase yield of 248.0 units/g initial dry
substrate (U/gIDS) was obtained in a medium containing a 5:1 ratio (w/v) of prawn waste/sea water, 1% (w/w)
NaCl, 2.5% (w/w) KH2PO4, 425±600 lm substrate particle size at 27 °C, initial pH 9.5, and after 5 days of incubation.
The presence of yeast extract reduced chitinase yield. The results indicate scope for the utilization of shell®sh
processing (prawn) waste for the industrial production of chitinase by using solid state fermentation.
Description:
World Journal of Microbiology & Biotechnology, Vol 14, 1998
Chandrasekaran, M; Ali, Bahkali H(Elsevier, January 11, 2013)
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Abstract:
The date palm Phoenix dactylifera has played an important role in the day-to-day life of
the people for the last 7000 years. Today worldwide production, utilization and industrialization of
dates are continuously increasing since date fruits have earned great importance in human nutrition
owing to their rich content of essential nutrients. Tons of date palm fruit wastes are discarded daily
by the date processing industries leading to environmental problems. Wastes such as date pits
represent an average of 10% of the date fruits. Thus, there is an urgent need to find suitable applications
for this waste. In spite of several studies on date palm cultivation, their utilization and scope
for utilizing date fruit in therapeutic applications, very few reviews are available and they are limited
to the chemistry and pharmacology of the date fruits and phytochemical composition, nutritional
significance and potential health benefits of date fruit consumption. In this context, in the present
review the prospects of valorization of these date fruit processing by-products and wastes’ employing
fermentation and enzyme processing technologies towards total utilization of this valuable
commodity for the production of biofuels, biopolymers, biosurfactants, organic acids, antibiotics,
industrial enzymes and other possible industrial chemicals are discussed
Description:
Saudi journal of biological sciences (2013)20,105-120