In order to generate the baseline information, a study was aimed to evaluate the quality of handm... more In order to generate the baseline information, a study was aimed to evaluate the quality of handmade Kashmiri Pashmina shawls. Various quality parameters of handmade yarn and shawls were studied using standard methods. The results showed the average weight/m2 (g), thickness (mm), ends and picks/inch, abrasion loss (%), shrinkage loss (%), drapeability coefficient (%) of finished fabric as 103.37±0.81, 0.49±0.02, 55.30±0.33, 55.40±0.35, 1.62±0.32, 1.75±0.56, 12.99±0.14 respectively. Breaking length (cm), bending rigidity (gcm2), breaking strength (kgf), elongation (%), tensile strength (kgf/cm2) along the warp and weft direction was found as 1.69±0.10 and 1.75±0.08; 3.09±0.30 and 3.29±0.23; 3.03±0.12 and 3.55±0.15; 11.93±0.22 and 12.90±0.24; and 0.102±0.02 and 0.13±0.03 respectively. SiroFAST results showed extension (%) in bias direction and surface thickness (mm) as 6.50±0.34 and 0.40±0.12, respectively. Bending length (mm), bending rigidity (μN.m), relaxation shrinkage (%) and hyg...
The present study details attempts made to extract purified natural dye from the heartwood of Kig... more The present study details attempts made to extract purified natural dye from the heartwood of Kigelia pinnata to dye cashmere fabrics. From the different extracted compounds, lapachol is identified as a viable dye source and the compound is characterized by using analytical and spectral (UV- Vis, IR, 1H NMR) data. The isolated lapachol is used to dye cashmere fabric alone and also with different mordants, such as aluminium sulphate, stannous chloride and ferrous sulphate. The dye produces bright reddish brown colours on fabric with reproducibility. The addition of different mordants during dyeing imparts very good fastness properties on the cashmere fabric.
The shade dried fruit coat husk powder of Juglans nigra (Wall nut) was subjected to column chroma... more The shade dried fruit coat husk powder of Juglans nigra (Wall nut) was subjected to column chromatographic separation which yielded 7 fractions. The fractions were then subjected for different spectral (IR, 1 H NMR and MS) and chemical analysis. Nine compounds including two 1,4-napthoquinones derivatives, juglone (I) and plumbagin (II), one α-tetralone derivative, (-)regiolone (III), two sterols, stigmasterol (IV) and β-sitosterol (V), four flavonoids, taxifolin (VI), kaempferol (VII), quercetin (VIII) and myricetin (IX) were isolated from chloroform fraction of aqueous extract of Juglan nigra husk powder. These extracted compounds were subsequently used for dyeing of Pashmina Shawl as natural dye substances which gave promising results. It was inferred that the combined effect of Jugalone and Plumbagin was responsible for the dyeing behaviour of wall nut husk powder.
The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical inv... more The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical investigation afforded seven already reported compounds viz.1-O-Isopentyl-3-O-octadec-2-enoyl glycerol (I), 1-O-trans,cis,trans-9,11,13-octadecatrienoyl glycerol (II), β-Sitosterol laurate (III), β-Sitosterol myristate (IV), Punicanolic Acid (V), Luteolin (VI) and Tricetin (VII). The structures of isolated compounds were ascertained using various spectral (IR, 1 H, 13 C NMR, MS) techniques. Compounds I, II, VI and VII were found to be couloured in nature and tested as dye substances on Cashmere (Pashmina) wool and showed promising dyeing properties.
International Journal of Pharmacy and Pharmaceutical Sciences
Objective: Present research work is carried out for development of some biological active new het... more Objective: Present research work is carried out for development of some biological active new heterocyclic moieties.
In this study, attempts have been made to utilize the coarse wool for the production of felt for ... more In this study, attempts have been made to utilize the coarse wool for the production of felt for technical textile applications. The feltability of coarse wool is found to be very low due to larger fibre diameter, less number of scales per cross-section as compared to fine wools. Hence, it is blended with different proportion of fine wool for preparing the felt with acceptable norms. Effort has also been made to partially remove the kemp fibre by passing the coarse wool through a woolen breaker card. The blend level of such processed coarse wool and fine wool is optimized in terms of feltability behavior. Technical felts of three different qualities have been prepared using optimized blend of coarse and fine wools and their performance properties like thermal insulation, resilience and abrasion resistance are evaluated. The results show that coarse wool in blends with medium fine wool in the ratio of 60:40 can be utilized for the preparation of technical felts. The developed felts can be used as thermal insulation and sound absorption panels, and for oil and chemical absorption applications.
A series of 2,4,6-trisubstituted 1,3,5-tris (benzothiazol-2-yl) hexahydro-1,3,5-triazine derivati... more A series of 2,4,6-trisubstituted 1,3,5-tris (benzothiazol-2-yl) hexahydro-1,3,5-triazine derivatives (3) have been synthesized by condensation of substituted benzothiazoles with 2,4,6-trisubstituted 1,3,5-trioxane by conventional as well as microwave irradiation (solvent free and solid support) methods. All compounds were tested for antiproliferative activity and entomological activity. The microwave irradiation technique gives better yield and reaction completion in a shorter period of time. Among solid supported microwave irradiation better yields are obtained with acidic alumina as compared to silica, neutral alumina and basic alumina.The results of biological activities prompted us that change in substitution pattern in benzothiazolyltriazine derivatives may cause marked effect on their antiproliferative activity.
The present investigation deals with studies on potentiality of a colour extract from Gerardiana ... more The present investigation deals with studies on potentiality of a colour extract from Gerardiana diversifolia as a source of natural dye, and on identification of chemical constituents responsible for dyeing ability. The efficacy of the extracted dye(s) on pashmina (Cashmere) fabrics has been evaluated for colour strength and fastness properties. Phytochemical studies reveal that the quinone and tannin are major components contributing to dyeing properties. The extracted colorant from Gerardiana diversifolia has potential to dye pashmina fabric with brown and grey shades having excellent wash and good to very good light fastness properties.
Pashmina fiber is one of major specialty animal fiber in India. The quality of Pashmina obtained ... more Pashmina fiber is one of major specialty animal fiber in India. The quality of Pashmina obtained from Changthangi and Chegu goats in India is very good. Due to restricted availability and high prices, adulteration of natural prized fibers is becoming a common practice by the manufacturers. Sheep wool is a cheap substitute, which is usually used for adulteration and false declaration of Pashmina-based products. Presently, there is lack of cost-effective and readily available methodology to identify the adulteration of Pashmina products from other similar looking substitutes like sheep wool. Polymerase chain reaction (PCR)-based detection method can be used to identify origen of animal fiber. Extraction of quality DNA from dyed and processed animal fiber and textile materials is a limiting factor in the development of such detection methods. In the present study, quality DNA was extracted from textile materials, and PCR-based technique using mitochondrial gene (12S rRNA) specific primers was developed for detection of the Pashmina in textile blends. This technique has been used for detection of the adulteration of the Pashmina products with sheep wool. The technique can detect adulteration level up to 10 % of sheep/goat fibers in textile blends.
The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical inv... more The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical investigation afforded seven already reported compounds viz.techniques. Compounds I, II, VI and VII were found to be couloured in nature and tested as dye substances on Cashmere (Pashmina) wool and showed promising dyeing properties.
Some N-(4/6-substituted-1,3-benzothiazol-2-yl)–N'-phenyl thiourea derivatives (3) have been s... more Some N-(4/6-substituted-1,3-benzothiazol-2-yl)–N'-phenyl thiourea derivatives (3) have been synthesized by the reaction of substituted benzothiazoles with phenyl isothiocyanate in absolute ethanol. These (3) were condensed with malonic acid in acetyl chloride to get 1-(4/6-substituted-1,3-benzothiazol-2-yl)-3-phenyl-2-thiobarbituric acid derivatives (5). All the synthesized compounds were characterized by elemental analysis, IR, 1 H NMR and Mass spectral studies. Compounds 3 and 5 were screened for their entomological and antibacterial activities.
A study was conducted to measure wool fibre diameter and medullation using advanced computerised ... more A study was conducted to measure wool fibre diameter and medullation using advanced computerised projection microscope with image analysis software and results were compared with conventional microscope method. The variations in fibre diameter measured by two methods were significant at 5% level. However, the standard deviation and coefficient of variation of fibre diameter was lower for computerized microscope system than conventional microscope method. The new system provides quicker, reproducible results and requires less manpower as compared to conventional system.
In order to generate the baseline information, a study was aimed to evaluate the quality of handm... more In order to generate the baseline information, a study was aimed to evaluate the quality of handmade Kashmiri Pashmina shawls. Various quality parameters of handmade yarn and shawls were studied using standard methods. The results showed the average weight/m2 (g), thickness (mm), ends and picks/inch, abrasion loss (%), shrinkage loss (%), drapeability coefficient (%) of finished fabric as 103.37±0.81, 0.49±0.02, 55.30±0.33, 55.40±0.35, 1.62±0.32, 1.75±0.56, 12.99±0.14 respectively. Breaking length (cm), bending rigidity (gcm2), breaking strength (kgf), elongation (%), tensile strength (kgf/cm2) along the warp and weft direction was found as 1.69±0.10 and 1.75±0.08; 3.09±0.30 and 3.29±0.23; 3.03±0.12 and 3.55±0.15; 11.93±0.22 and 12.90±0.24; and 0.102±0.02 and 0.13±0.03 respectively. SiroFAST results showed extension (%) in bias direction and surface thickness (mm) as 6.50±0.34 and 0.40±0.12, respectively. Bending length (mm), bending rigidity (μN.m), relaxation shrinkage (%) and hyg...
The present study details attempts made to extract purified natural dye from the heartwood of Kig... more The present study details attempts made to extract purified natural dye from the heartwood of Kigelia pinnata to dye cashmere fabrics. From the different extracted compounds, lapachol is identified as a viable dye source and the compound is characterized by using analytical and spectral (UV- Vis, IR, 1H NMR) data. The isolated lapachol is used to dye cashmere fabric alone and also with different mordants, such as aluminium sulphate, stannous chloride and ferrous sulphate. The dye produces bright reddish brown colours on fabric with reproducibility. The addition of different mordants during dyeing imparts very good fastness properties on the cashmere fabric.
The shade dried fruit coat husk powder of Juglans nigra (Wall nut) was subjected to column chroma... more The shade dried fruit coat husk powder of Juglans nigra (Wall nut) was subjected to column chromatographic separation which yielded 7 fractions. The fractions were then subjected for different spectral (IR, 1 H NMR and MS) and chemical analysis. Nine compounds including two 1,4-napthoquinones derivatives, juglone (I) and plumbagin (II), one α-tetralone derivative, (-)regiolone (III), two sterols, stigmasterol (IV) and β-sitosterol (V), four flavonoids, taxifolin (VI), kaempferol (VII), quercetin (VIII) and myricetin (IX) were isolated from chloroform fraction of aqueous extract of Juglan nigra husk powder. These extracted compounds were subsequently used for dyeing of Pashmina Shawl as natural dye substances which gave promising results. It was inferred that the combined effect of Jugalone and Plumbagin was responsible for the dyeing behaviour of wall nut husk powder.
The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical inv... more The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical investigation afforded seven already reported compounds viz.1-O-Isopentyl-3-O-octadec-2-enoyl glycerol (I), 1-O-trans,cis,trans-9,11,13-octadecatrienoyl glycerol (II), β-Sitosterol laurate (III), β-Sitosterol myristate (IV), Punicanolic Acid (V), Luteolin (VI) and Tricetin (VII). The structures of isolated compounds were ascertained using various spectral (IR, 1 H, 13 C NMR, MS) techniques. Compounds I, II, VI and VII were found to be couloured in nature and tested as dye substances on Cashmere (Pashmina) wool and showed promising dyeing properties.
International Journal of Pharmacy and Pharmaceutical Sciences
Objective: Present research work is carried out for development of some biological active new het... more Objective: Present research work is carried out for development of some biological active new heterocyclic moieties.
In this study, attempts have been made to utilize the coarse wool for the production of felt for ... more In this study, attempts have been made to utilize the coarse wool for the production of felt for technical textile applications. The feltability of coarse wool is found to be very low due to larger fibre diameter, less number of scales per cross-section as compared to fine wools. Hence, it is blended with different proportion of fine wool for preparing the felt with acceptable norms. Effort has also been made to partially remove the kemp fibre by passing the coarse wool through a woolen breaker card. The blend level of such processed coarse wool and fine wool is optimized in terms of feltability behavior. Technical felts of three different qualities have been prepared using optimized blend of coarse and fine wools and their performance properties like thermal insulation, resilience and abrasion resistance are evaluated. The results show that coarse wool in blends with medium fine wool in the ratio of 60:40 can be utilized for the preparation of technical felts. The developed felts can be used as thermal insulation and sound absorption panels, and for oil and chemical absorption applications.
A series of 2,4,6-trisubstituted 1,3,5-tris (benzothiazol-2-yl) hexahydro-1,3,5-triazine derivati... more A series of 2,4,6-trisubstituted 1,3,5-tris (benzothiazol-2-yl) hexahydro-1,3,5-triazine derivatives (3) have been synthesized by condensation of substituted benzothiazoles with 2,4,6-trisubstituted 1,3,5-trioxane by conventional as well as microwave irradiation (solvent free and solid support) methods. All compounds were tested for antiproliferative activity and entomological activity. The microwave irradiation technique gives better yield and reaction completion in a shorter period of time. Among solid supported microwave irradiation better yields are obtained with acidic alumina as compared to silica, neutral alumina and basic alumina.The results of biological activities prompted us that change in substitution pattern in benzothiazolyltriazine derivatives may cause marked effect on their antiproliferative activity.
The present investigation deals with studies on potentiality of a colour extract from Gerardiana ... more The present investigation deals with studies on potentiality of a colour extract from Gerardiana diversifolia as a source of natural dye, and on identification of chemical constituents responsible for dyeing ability. The efficacy of the extracted dye(s) on pashmina (Cashmere) fabrics has been evaluated for colour strength and fastness properties. Phytochemical studies reveal that the quinone and tannin are major components contributing to dyeing properties. The extracted colorant from Gerardiana diversifolia has potential to dye pashmina fabric with brown and grey shades having excellent wash and good to very good light fastness properties.
Pashmina fiber is one of major specialty animal fiber in India. The quality of Pashmina obtained ... more Pashmina fiber is one of major specialty animal fiber in India. The quality of Pashmina obtained from Changthangi and Chegu goats in India is very good. Due to restricted availability and high prices, adulteration of natural prized fibers is becoming a common practice by the manufacturers. Sheep wool is a cheap substitute, which is usually used for adulteration and false declaration of Pashmina-based products. Presently, there is lack of cost-effective and readily available methodology to identify the adulteration of Pashmina products from other similar looking substitutes like sheep wool. Polymerase chain reaction (PCR)-based detection method can be used to identify origen of animal fiber. Extraction of quality DNA from dyed and processed animal fiber and textile materials is a limiting factor in the development of such detection methods. In the present study, quality DNA was extracted from textile materials, and PCR-based technique using mitochondrial gene (12S rRNA) specific primers was developed for detection of the Pashmina in textile blends. This technique has been used for detection of the adulteration of the Pashmina products with sheep wool. The technique can detect adulteration level up to 10 % of sheep/goat fibers in textile blends.
The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical inv... more The chloroform fraction of the aqueous extract of the rind of Punica granatum on its chemical investigation afforded seven already reported compounds viz.techniques. Compounds I, II, VI and VII were found to be couloured in nature and tested as dye substances on Cashmere (Pashmina) wool and showed promising dyeing properties.
Some N-(4/6-substituted-1,3-benzothiazol-2-yl)–N'-phenyl thiourea derivatives (3) have been s... more Some N-(4/6-substituted-1,3-benzothiazol-2-yl)–N'-phenyl thiourea derivatives (3) have been synthesized by the reaction of substituted benzothiazoles with phenyl isothiocyanate in absolute ethanol. These (3) were condensed with malonic acid in acetyl chloride to get 1-(4/6-substituted-1,3-benzothiazol-2-yl)-3-phenyl-2-thiobarbituric acid derivatives (5). All the synthesized compounds were characterized by elemental analysis, IR, 1 H NMR and Mass spectral studies. Compounds 3 and 5 were screened for their entomological and antibacterial activities.
A study was conducted to measure wool fibre diameter and medullation using advanced computerised ... more A study was conducted to measure wool fibre diameter and medullation using advanced computerised projection microscope with image analysis software and results were compared with conventional microscope method. The variations in fibre diameter measured by two methods were significant at 5% level. However, the standard deviation and coefficient of variation of fibre diameter was lower for computerized microscope system than conventional microscope method. The new system provides quicker, reproducible results and requires less manpower as compared to conventional system.
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