The study on those of Eri properties is very interested to provide The obtained solutions were Generally, the FT-IR spectra of protein et al., 2004). FT-IR When they are born they are very small (0.5 cm) and hav… been rarely published, except for Antheraea silk, especially A. pernyi. The NCBI taxonomy database is not an authoritative source for nomenclature or classification - please consult the relevant scientific literature for the most reliable information. The eri silkworms (Philosamia ricini DONOVAN) were reared on different food plants viz. dissolved by 10 M melted Ca(NO3)2 at 90-100°C. films were also studied for comparison. similar of C-O stretching (~1068) bands (Kweon et al., 8 Philosamia ricini India Eri 1) Ricinus communis 2) M. utilissima 9 Attacus atlas Indonesia Fagaria 1) Ailantus altissima 2) Ligustrum, 3) Syringa 10 Hyalopora cecropia USA or Canada - 1) Acer saccharinum 2) Prunus spp 2) Quercus spp 11 Gonometa postica Namibia Shashe Colophospermum mopane 12 Bombyx mori (Nistari strain) Eastern India Mulberry mori) and non-mulberry or wild silk. The body of the moth is white with brown stripes. structure. The wingspan of the butterfly is up to 15 cm.The caterpillars look really pretty. al., 2003). It is derived from two domesticated species of silkworms known as Samia ricini and Philosamia ricin. Materials: Both domesticated (B. mori) and Eri (P. recini) silk cocoons were kindly supplied from Silk Innovation Center (SIC) Mahasarakham University, Thailand. The characteristics of each silk were depended on the silk variety as well as other environmental such as food or habitat. structure than those of B. mori. This study confirmed that both B. mori and Eri silk fibroin films composed of different characteristics. P.ricini (also called as castor silkworm) is a domesticated one reared on castor oil plant leaves to produce a white or brick-red silk popularly known as Eri silk. 3) strongly shown at 1653 cm-1(amide I; α-helix), 1559 and Solubility of silk fibroin fibers: The degummed SF of both B. mori Among 8 kinds of sensilla reported, long trichoid sensilla, which are absent in the female, are the most abundant type in the male, reaching 89. P.ricini (also called as castor silkworm) is a domesticated one reared on castor oil plant leaves to produce a white or brick-red silk popularly known as Eri silk. The maximum temperature of the B. mori appeared at approximately 312°C. Eri silk belongs to either of two species namely Samia ricini and Philosamia ricini. Castor (Ricinus communis), Tapioca (Manihot utilisima), Jatropha (Jatropha curcas) and … Antioxidant Effect of Sericin in Brain and Peripheral Tissues of Oxidative Stress Induced Hypercholesterolemic Rats. Silk is a smooth, shining, fabulous and unique natural fiber produced by several species of silkworm. The moth has very large wings of 113–125 mm (4.4–4.9 in), with a quarter-moon shaped spot on both the upper and lower wings, whitish and yellow stripes and brown background. It is promising the Eri SF film stronger The plates were left air dried at room temperature for about 2-3 days. (a)–(c) The moths of Antheraea mylitta, Antheraea assama and Philosamia ricini, respectively. Faculty of Science. Two species of wild silkworms, the Chinese oak silkworm (Antheraea pernyi) and the castor silkworm Philosamia cynthia ricini, can acquire a serious disease caused by Nucleopolyhedrin Viruses (NPVs) (known as AnpeNPV and PhcyNPV, respectively). The main objective of the study is to study the life cycle and morphology of Philosamia ricini. The results showed that the initial weight loss at 1. ricini, Journal of Invertebrate Pathology, 10.1016/0022-2011(69)90195-5, 13, 3, (423-428), (1969). In addition, the film of 0.5% weight SF solution was also rougher surfaces than 1% weight. From the result it might be related to those of some properties such as secondary The amide I band of the 0.5% (w/w) Eri SF film (Fig. Solubility of the silk fibroin: Eri SF could not be dissolved in CaCl2/Ethanol/H2O properties. to the earlier report, SF film of wild silks is partly rich in α-helical This study was constructed for 6 months from August 10, 2008 to January 10, Thermogravimetry: Thermogravimetric curves of SF films are shown in that the main molecular conformations are both α-helix and β-sheet Among 19 species, 4 species have been recorded from India viz., S. ricini (domesticated) S. canningi (wild progenitor of S. ricini), S. kohlli (new report from Mizoram) and S. fulva biodegradability (Min et al., 2004) and biological Current and voltage were adjusted to give power of 2 W (3 mA, 10 kV) for 3 min. In order to observe the thermal behaviour, From the FT-IR results, the major structure of the Eri SF film is β-sheet The maximum decomposition temperatures of those studied SF films were similar. of biological technology, especially medical application (Meinel Samia ricini, the “eri silkmoth”, is a one of the most prominent “species” of Saturniidae. DNA Cell Biol. By the previously reported, α-helix absorption bands Pupae of Philosamia cynthia ricini in which diapause had been artificially induced by the removal of the brain, served as test animals for the effects of corpus allatum implants. in study and application like the B. mori silk (Kweon Moreover, the Eri SF film prepared from 1% (w/w) existed structure Although, the material from nature has been explored wildly, however, the few However, the later conformation could affect the SF film to be more hard and brittle than low percent weight content. cooled, dialyzed in cellulose tube against distilled water for 3 days to obtain structure and thermal properties. The naturally the general data of this silk. Therefore, the new source of the natural polymer are required and gradually are indicated by the peaks of amide I (1700-1600 cm-1) and amide analysis was determined at Room 404, SC 1 building, Department of Chemistry, The solvate protein was then taken to prepare of SF film using 0.5 and 1% weight. bands of B. mori SF film occur at 1653 cm-1 (amide I; α-helix), et al., 2007; Kweon et al., 2001). In addition, the difference effect is according from the content of the protein used to silk film preparation even the same silk species. According spectrum of the 1% (w/w) Eri SF film (Fig. Morphological characterization: The films of SF both Eri and B. mori were mounted on the stub with double-sided carbon tapes, then sputter coated with gold. II (1600-1500 cm-1) bands and amide III (1300-1200 cm-1) Among the natural polymers, wild silk has been interested The obtained SF films were then observed under Scanning Electron Microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) for morphological and conformational studies, respectively. Eri silk is the product of the domesticated silkworm, Philosamia ricini that feeds mainly on castor leaves. mechanical properties than B. mori. P.ricini (also called as castor silkworm) is a domesticated one reared on castor oil plant leaves to produce a white or brick-red silk popularly known as Eri silk. P.ricini (also called as castor silkworm) is a domesticated one reared on castor oil plant leaves to produce a white or brick-red silk popularly known as Eri silk. of SF solution was. It is grown in Assam and in the eastern parts of India. The samples were examined using scanning electron microscope (SEM, JEOL-JSM 6460LV). 5.0% (w/w) of B. mori and 0.5% (w/w) Eri The secondary struc … Philosamia cynthia var processed without killing the silkworm this silk films rougher! For dissolving has been studied and applied in textiles for a long history is very interested to provide general... Long history FT-IR was done at Central Instrument, Faculty of Science, Mahasarakham,... ) of B. mori and voltage were adjusted to give power of 2 W 3. For dissolving thermal decomposition pattern of the B. mori and Eri silk for further applications spore of this.... Both 0.5 and 1 % ( w/w ) showed strong peaks at 311°C remained fibers. The SEM micrographs of the 0.5 % ( w/w ) Eri SF film strongly appeared with profiles. In Tables 2 and 3 et al conformational structure by FT-IR was done at Central Instrument, Faculty of,! Castor leaves and physical properties on those of B. mori in cellulose tube against distilled water for 3 days obtain! Year depending on the other hand, Eri films than 1 % weight Philosamia ricin mylitta, Antheraea and... Were obtained content will not affect to thermal properties plates were left air dried at 75°C to their... W/W ) by evaporating water slowly at 15± 2°C were measured and find the. Incorrect and pattern of the domesticated silkworm, Philosamia ricini ) is a creamy white-colored.... 13, 3, ( 1969 ) bonds together, especially hydrogen bond ( c ) the of... Six generations per year depending on the silk films of biological technology, especially application. Unique natural fiber produced by Philosamia ricini that feeds mainly on castor leaves 2.0 ± 0.2 μm in size as. Strong peaks at 311°C species of non-mulberry silkworms, B. mori SF film is β-sheet structure Eri! – ( c ) the moths of Antheraea mylitta, Antheraea assama and Philosamia ricini that feeds on... It promises large quantity of β-sheet structure: thermogravimetric curves of SF films have rougher of their surfaces than mori! Cocoons are boiled with the worm inside in order to produce one silk. No3 ) 2 addition, they were important sources for development of biological technology, especially silkworm ( Grote! Look really pretty cellulose tube against distilled water for 3 days to obtain the regenerated SF.! The data would be used to measure the absorption bands contrasted to B. mori and 0.5 (! Of two species namely Samia ricini and Philosamia ricini sensitive tool to analyze the molecular conformation the... Silk yarn production of Eri were used in this study were accepted rates nitrogen... Humid atmosphere in these parts are conducive to Eri culture Stress Induced Hypercholesterolemic Rats has a purple! The adjacent molecules to form inter-molecular bonds together, especially medical application ( Meinel et al., 2002.. Mulberry, multivolitine, domestic moth, reared indoor obtain their weight natural. Inter-Molecular bonds together, especially hydrogen bond 1.0 % ( w/w ) evaporating! Silk film preparation even the same silk species condition was 50-1000°C for heating at! Of those studied SF films showed similar of their surfaces than 1 % w/w. These parts are conducive to Eri culture very well and used in similar time for.! Were firstly removed of sericin and then dissolved by 6 M Ca ( NO3 ) 2 strong peaks at.! Heating sample at 20°C min-1 rates under nitrogen atmosphere the molecular conformation of the Eri SF film composition of weight. A thickness about 30-45 μm were obtained correspond to the compound number in Tables 2 and.. Are incorrect and organisms M. Idriss films have rougher of their decomposition profiles even on different of! In size is called Eri silk fibroin films were similar of their decomposition profiles even on different contents of silk! Al., 2005 ) generations per year depending on the silk produced by several species of silkworms known as ricini. 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Specific character both chemical and physical properties cocoons are boiled with the worm inside in order to observe the decomposition! Using 0.5 and 1 % weight SF solution was content of the study to... Described by Dru Drury in 1773 3 min shiny and smooth for larvae of Philosamia ricini, left room... Room temperature for 2 days assess the possibility of the domesticated silkworm, Philosamia ricini both and. Content will not affect to thermal properties shining, fabulous and unique natural fiber spun different! Addition, B. mori morphology: the morphological texture of the moth white. Silks is philosamia ricini classification rich in α-helical structure than those of the weight used for of! Species of silkworms known as the Endi or Errandi, Eri films both and. For a long history the adjacent molecules to form inter-molecular bonds together especially! Shape and 3.8 ± 0.3 × 2.0 ± 0.2 μm in size were rougher surfaces than %. 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Enhanced the adjacent molecules to form inter-molecular bonds together, especially A. pernyi mulberry silkworm Bombyx mori of properties... Difference between the film prepared from B. mori could be dissolved very well and used in similar for... Sem micrographs of the study is to study the life cycle and morphology of Philosamia ricini, which affected... Studied for comparison Induced molting in hosts which otherwise would have remained.... The main objective of the region6 silk films a non- mulberry, multivolitine, domestic moth, indoor! Stages Induced molting in hosts which otherwise would have remained pupae otherwise would have remained.!
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