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Publications (42)
The study aimed to assess the efficiency of higher xylanase and lower cellulase-producing bacteria as a whole-cell biocatalyst for surface modification of banana pseudostem fibers in an eco-friendly and cost-effective manner. The ability of bacterial biocatalysts to alter fibers’ surface during fiber-biocatalyst interaction in liquid media was dete...
The effect of sodium alginate- crystalline nanocellulose based pickering emulsion containing different concentrations of thyme and clove essential oils on post-harvest storage life and quality of guava fruits under ambient condition was assessed. The guavas were coated by dipping in respective emulsions and evaluated at 3 days interval upto 12 days...
Herein, the potential of cotton seed hulls (CSH) as prospective feedstock for producing thermostable and alkaliphilic xylanase by Bacillus pumilus and Bacillus licheniformis during submerged fermentation was demonstrated. Results revealed that CSH predominantly contains holo-cellulose (65.6%), alpha-cellulose (38.8%), hemicelluloses (24.5%), and li...
Due to discharge of hazardous organochlorine compounds and absorbable organic halogen compounds in the effluent, the pulp and paper industries are trying to alter the bleaching process to limit the use of chlorine compounds and comply with regulatory, environmental, and market demands. With progress in biotechnology, enzyme technologies can effecti...
Nanocellulose (NC) is a new frontier subject of research owing to its unique material properties. The key challenge in producing the NC on commercial scale is high energy requirement in mechanical methods and high use of toxic chemicals in chemical methods. The present study aimed at development of a process protocol for energy-efficient production...
Modification of vegetable oils is carried out to make them suitable according to their specific end use as most of the vegetable oils in original forms do not meet the recommended dietary allowance of saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids. Vegetable oils are modified using a variety of techniques including h...
The nanocellulose (NC) synthesized from cotton linters was used as a reinforcement to develop biocomposite films with improved functionality. The starch films incorporated with varying percentages of NC and other additives (glycerol (GL), polyvinyl alcohol (PVOH)) were prepared using solvent casting method. Response Surface Methodology was employed...
The use of each and every part of any crop leads to additional income to the farmer and at the same time reduces the environmental burden caused by inefficient use of the by-product. Cotton is grown in over 80 countries and it is an important cash crop in India. India is leading country in production and total cultivable area under cotton crop. It...
Gossypol is a polyphenolic aldehydic compound which has been studied for its versatile biological activities. The extraction of gossy�pol from cottonseed meal was attempted using acidified solvent system. Mixture of acetone: ethanol and water (70:20:10) at 4.5 pH with solid-to-liquid ratio of 1:20 can be considered as best conditions for the extrac...
Sustainable flame retardancy of polymeric materials is one of the thirsty, promising and challenging areas in today's fire safety world. Different researchers are trying to achieve that scientific beauty employing different research perspectives. Bio-based (bio-macromolecule) flame retardancy is one of the emerging and promising fields and continuo...
A cellulosic fibre based well-being fragrance packet has been developed by Central Institute for Research on Cotton Technology (CIRCOT). Inside the packet, three layers of cotton nonwoven (gram per square meter 100) have been used as core material. Fragrance based natural essential oil (citronella oil) has been incorporated in the middle non-woven...
Background: Cottonseed is a sustainable source of plant protein, producing ~10 million metric tons of protein globally. This protein has the potential to fulfil the annual protein requirement of more than half a billion people globally. Its functional properties have established the potential of cottonseed protein (CSP) as a candidate for alleviati...
Cottonseed is potential candidate to act as an important protein source but presence of toxic compound gossypol with concentration more than 0.045% is main hurdle in utilization of this protein. Optimized lyophilised protein powder constitutes 5.05% moisture, 93.1% crude protein, 0.03% free gossypol, 0.27% total gossypol, and total bacterial count...
The present chapter briefly outlines some basic information about cellulosic fibers, history and chemistry of reactive dye development, different types of reactive dyes, method of application, ecological aspects of reactive dyes, unconventional dyeing methods for reactive dyes, sustainability challenges in the reactive dyes, current technologies fo...
This study evaluated the effect of biopolishing using cellulase enzymes on the low stress mechanical properties, microstructure, and dye uptake of different cellulosic fabrics (cotton, modal, and cotton denim). The tactile features were studied via the Kawabata evaluation system (KES) and showed increments in tensile elongation, tensile resilience...
Cottonseed can be considered as a potential candidate to act as an important protein source. However, toxic compound "gossypol" is the main hurdle in utilization of this potential source of protein. The current study aims to optimize the extraction of cottonseed protein isolate (CSPI) from defatted cottonseed meal (CSM) using Box-Behnken design (BB...
A short statured variety Indica with open type of canopy that matured in 130 days yielded 2246 kg of seed cotton ha-1 with better quality of fibres than the other popular varieties MCU5, MCU5 VT and Surabhi which recorded 6.50 to 12.15% lesser yield in the village farms with lower quality of fibres than Indica. The bleached fibres of variety Indica...
This technical report dealt with an accelerated process for preparation of bio-enriched compost from cotton plant stalks. The process is found suitable to cotton growers and rural entrepreneurs for on farm utilization of cotton stalks and soil fertility enhancement.
The economically important part of any fibre crop is its “fibre”. After the harvesting of fibre, plant remain with residue (stalk, stem, leaves) which can be value-added and can eliminate environmental problem resulted due to burning of crop residues. The detailed review aims to discuss the major and under-utilized fibre crop residues in India and...
The current study was carried out to improve the utilization of cottonseed meal (CSM) as a feed to monogastric animals. Papain enzyme was considered as one of the green channels for removing the gossypol from the CSM. The cottonseed meal was evaluated for the free and total gossypol for assessing the effect of enzyme for its improvement. A Box-Behn...
Plasma, an ionized gas composed of ions, electrons, photons, UV-radiation and neutral active species can be used for nano-scale surface modification of textile substrates without using water. Among the various types of plasma, only atmospheric pressure cold plasma (non-thermal plasma) is suitable for surface modification of heat sensitive polymeric...
Increasing human population, environmental impacts of synthetic polymers and limited non-renewable resources have steered the development of sustainable alternatives. Synthetic polymer composites are made from two or more non-biodegradable components which make its recycling difficult leading to high disposal cost and negative environmental impact....
The flame retardant functionality has been imparted in cellulosic fabric using mixed formulation of banana pseudostem sap (BPS) and boric acid (BA). The extracted sap is mixed with different concentration of BA and applied onto the pre-mordanted bleached and mercerized cotton fabrics at elevated temperature. It is found that BA acts as a strong aft...
In the present study low cost microcrystalline cellulose (MCC) powder was prepared from cornhusk fibres, extracted chemically followed by anaerobic consortium treatment. Cornhusk fibres were treated with 10% alkali at 120 °C for 60 min followed by anaerobic consortium treatment for 3 days. It was then bleached with hydrogen peroxide and finally was...
Flame retardancy has been imparted to cellulosic cotton textiles using spinach (Spinacia Oleracea) juice (SJ). The extracted juice has been made alkaline and then applied a fresh to a bleached and premordanted cotton fabric. The flame retardant properties of both the control and the treated fabrics are analysed for limiting oxygen index (LOI) and v...
Textile wet processing is an important step in textile production as it adds maximum value to the textiles by improving its aesthetics, comfort and functional properties. However, as the name indicates, a large amount of water is used as the medium which during the processing operations gets contaminated with unfixed dyes, chemicals and auxiliaries...
This study aims at developing an enzyme based single bath scouring and bleaching process for the preparation of absorbent cotton using short staple cotton fibre with high micronaire. Neutral pectinase and cellulase enzymes individually and also in combination for scouring and hydrogen peroxide for bleaching have been used. The enzymatic process has...
Chemical processing adds value to the textiles by improving aesthetics and imparting functional properties. It is usually carried out in the aqueous medium and thus requires a large amount of water. A number of chemicals and auxiliaries are employed in the process many of which are not biodegradable. Unused chemicals are discharged along with the p...
Ginning of seed cotton occupies a very important place in the passage of cotton from the field to the factory. The ginning machine is to be accurately adjusted and the seed cotton (kapas) is to be presented in a proper condition in order to get satisfactory results, otherwise the quality of lint or seeds is likely to suffer in the ginning process....
The flame retardant functionality was imparted in cellulosic textile using banana pseudostem sap, an eco-friendly waste plant product. The extracted sap was applied in three different pH conditions, viz. acidic, neutral and alkaline to the pre-mordanted bleached and mercerized cotton fabrics. Flame retardant characteristics of both the control and...
In this work, nano zinc oxide (nano-ZnO) was applied onto cotton fabric by exhaustion method using
an ionic liquid (IL), 1-butyl 3-methyl imidazolium chloride [BMIM][Cl], to improve its uptake and fixation.
Effect of temperature on the exhaustion of nano-ZnO in the presence of ionic liquid was investigated.
A spectrophotometric method was establ...
Cotton is the raw material for preparation of absorbent cotton. Raw cotton has to be subjected to scouring and bleaching processes for making it absorbent by removing the naturally present wax, protein and minerals in the fibre. The scouring is done at 115°C using alkali followed by bleaching at boiling condition using alkaline hydrogen peroxide so...
In the present study, without using water as a processing medium, a hydrophilic cotton (cellulosic) textile was plasma treated in an indigenously developed atmospheric pressure plasma reactor in the presence of helium-fluorocarbon (He-FC) gases, for imparting hydrophobic functionality to the treated textile. The optical emission spectra (OES) showe...
This technical report dealt about the microbial process for degossypolization and nutritive quality enrichment of cottonseed cake. The process is found applicable to cottonseed processing industries, animal feed industries and cotton growers.
In this study, the moisture and thermal transmission properties of cotton/polylactic acid-blended knitted fabrics were studied. Cotton and polylactic acid fibers were blended to produce yarns of 14.7 tex (40 s Ne) with two different blend proportions. The yarns were then knitted into plain jersey structures, followed by scouring and bleaching treat...
Flame retardancy was imparted in cellulosic cotton textile using banana pseudostem sap (BPS), an eco-friendly natural product. The extracted sap was made alkaline and applied in pre-mordanted bleached and mercerized cotton fabrics. Flame retardant properties of both the control and the treated fabrics were analysed in terms of limiting oxygen index...
Dyes derived from natural materials such as plant leaves, roots, bark, insect secretions, and minerals were the only dyes available to mankind for the coloring of textiles until the discovery of the first synthetic dye in 1856. Rapid research strides in synthetic chemistry supported by the industrialization of textile production not only led to the...
Premordanting of jute fabric was carried out following single mordanting by biomordants (myrobolan and pomegranate) and ecofriendly chemical mordants (ferrous sulphate and potash alum) and double mordanting by sequential treatment of biomordant and ecofriendly chemical mordant. Extraction condition of natural dyes from manjistha, annatto, ratanjot...
A technique to dye cotton fabric with lac dye has been standardised. Chitosan, a naturally occurring polymer has been used as a pretreatment for dyeing. The dye produces a violet shade on a cotton fabric when dyed in an acidic medium. The washfastness of the dyed material can be improved by the use of mordants as well as by a crosslinking treatment...
