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2016 | 42 | 167-181
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Utilization of the Retinol and Phytol for the quality improvement of cocoon and silk fibre spinned by fifth instar larvae of silkworm, Bombyx mori (L) (Race: PM x CSR2)

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By convention the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in greater amounts than vitamins) nor the great number of other nutrients that promote health, and are required less often to maintain the health of the organism. Thirteen vitamins are universally recognized at present. Vitamins are classified by their biological and chemical activity, not their structure. Thus, each "vitamin" refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Such a set of chemicals is grouped under an alphabetized vitamin "generic descriptor" title, such as "vitamin A", which includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well. Topical application of ten microliters of one milligram per liter strength acetone solution of retinol phytol to the individual fifth instar larvae of multivoltine cross breed race of silkworm, Bombyx mori (L) ( PM x CSR2) at 48, 54, 60 and 66 hours after the fourth moult was found variously reflected into prolongation of larval age (14 – 39 % for retinol treated groups and 17 – 42 % for phytol treated groups); improvement in the tissue somatic index (TSI) of silk glands (3.053 – 3.343 for retinol treated groups and 3.070 – 3.092 % for phytol treated groups); cocoon shell ratio (2.790 – 3.177 for retinol treated groups and 2.693 – 3.629 for phytol treated groups) and denier scale of silk filament (p < 0.01). Retinol and phytol, thus chiefly lengthening the larval age in silkworm, Bombyx mori (L). The synergistic activity of diterpenoids in the present attempt is hypothesized to be due to changes in the membrane fluidity, interference with membrane bound signaling proteins and cell cycle arrest. Efficient utilization of diterpenoids like, retinol and phytol, through acetone solvent for topical application to the fifth instared larvae of silkworm, Bombyx mori (L) may open a new biotechnological and Vitamin oriented avenue in the sericulture industries. Efficient use of Vitamin A and Phytol serve to orchestrate the qualitative progression of silk.
Physical description
  • Research Group, A.D.T. and Shardabai Pawar Mahila Mahavidyalaya, Shardanagar, Malegaon (Baramati) Dist. Pune – 413115, India
  • Research Group, A.D.T. and Shardabai Pawar Mahila Mahavidyalaya, Shardanagar, Malegaon (Baramati) Dist. Pune – 413115, India
  • Research Group, A.D.T. and Shardabai Pawar Mahila Mahavidyalaya, Shardanagar, Malegaon (Baramati) Dist. Pune – 413115, India
  • Research Group, A.D.T. and Shardabai Pawar Mahila Mahavidyalaya, Shardanagar, Malegaon (Baramati) Dist. Pune – 413115, India
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