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Enzymes from conidiobolus brefeldianus and process for preparation thereof

A kind of ear mold, selected technology, applied in the field of enzyme and its preparation from Burfred ear mold (CONIDIOBOLUS BREFELDIANUS), can solve the problem of no inclusion etc.

Inactive Publication Date: 2013-11-13
科学和工业研究委员会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is no prior art enzyme composition comprising protease, lipase and carbohydrase from a strain of Conidiobolus species

Method used

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  • Enzymes from conidiobolus brefeldianus and process for preparation thereof
  • Enzymes from conidiobolus brefeldianus and process for preparation thereof
  • Enzymes from conidiobolus brefeldianus and process for preparation thereof

Examples

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Embodiment 1

[0082] This example illustrates the isolation of O. bulfredii MTCC 5185 and its characterization by morphological characteristics. Isolation of fungal cultures from decomposing plant debris in Pune (collection), Maharashtra, India. Spread fine particles of plant debris on MGYP agar (malt extract-0.3%; yeast extract-0.3%; peptone-0.5, glucose-1%, agar-2%) attached to the inner surface of the petri dish lid Block and incubate the plate at 28°C. Single isolated colonies arising from the vigorously irradiated conidia were picked and transferred to MGYP agar slants and incubated at 28°C for 2-3 days. The organism grows rapidly and is identified as belonging to the genus Atomyces based on the morphology of strongly emanating large spherical conidia with basal papillae. The mycelia are non-septate and multinucleate, but become septate in later stages. Conidiophores have short filaments and are indistinguishable from mycelia. At the tip of the molecular spore peduncle, strongly ra...

Embodiment 2A

[0084] This example illustrates the isolation of genomic DNA from O. bulfredii MTCC 5185 by the cetyltrimethylammonium bromide (CTAB) method. To isolate DNA, the fungus was grown in liquid flasks in malt extract dextrose yeast extract peptone (MGYP) medium consisting of (g / L) malt extract-3; yeast extract -3; peptone-5 and glucose-10. Growth was initiated by inoculating spores from 7 day old MGYP slants. The flasks were incubated for 48 hours at 28°C on a rotary shaker (200 rpm). The contents were centrifuged at 8000rpm for 15min, and washed repeatedly to remove medium components. 3-5 g of wet mycelium was ground in liquid nitrogen, then 8-10 ml of CTAB extraction buffer containing 0.2% β-mercaptoethanol, pH 8 was added, followed by 20 μl of proteinase K (20 mg / ml) and incubated at 65°C 1h. This was followed by the addition of 20 μl RNase A (10 mg / ml) and further incubation at 65° C. for 15 min. To the supernatant collected after centrifugation (8000 rpm, 10 min), 10 ml o...

Embodiment 2B

[0086] This example illustrates genomic DNA polymerase chain reaction (PCR) amplification for the 18S rDNA gene. The primers used to identify fungal species were universal fungal 18S ribosomal DNA (rDNA) primers NS1-F (GTA GTC ATA TGC TTG TCT C), NS8-R (TCC GCA GGT TCA CCT ACG GA). Polymerase chain reaction (25 μl) was used to amplify the 18S rDNA gene from genomic DNA. The reaction mixture typically contains genomic DNA - 0.70 μl, 10X PCR buffer - 2.50 μl, 0.2 mM dNTPs - 2.5 μl, forward and reverse primers each 10-20 pmol - 1.25 μl, distilled water - 16.60 μl and 1 unit of Taq DNA Polymerase - 0.20 μl. PCR conditions for 18S rDNA gene propagation were: initial denaturation at -95°C for 3 min, followed by 35 cycles of 94°C for 1 min, 57°C for 30 sec, 72°C for 2 min, and a final extension at 72°C for 10 min. 5 μl of the above PCR amplification product was used to check the amplification on a 1.0% agarose gel.

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Abstract

The instant invention relates to a fungus of the Conidiobolus species bearing accession number MTCC 5185. The invention further relates to the process for preparing an enzyme mix of proteases, carbohydrases, and lipases for the Conidiobolus species. Such enzymes find use in the leather, silk and other industries.

Description

field of invention [0001] The present invention relates to an enzyme composition comprising a protease, a lipase and a carbohydrase from Conidiobolus brefeldianus MTCC 5185. Furthermore, the invention relates to a process for the preparation of said composition and its use. Background of the invention [0002] The current estimated worldwide sales value of industrial enzymes is $1 billion. Among industrial enzymes, 75% are hydrolases. Proteases, amylases, lipases and xylanases together constitute around 85-90% of the total enzymes sold, with proteases from plant, animal and microbial origin accounting for around 60%. [0003] Bacterial proteases are well known and proteases of fungal origin are limited but advantageous. In addition, fungal-derived proteases are limited in combination with other enzymes. [0004] It is known that Conidiobolus coronatus has been used as a production source of alkaline protease, with reference to US6777219, US7186546, R.Seeta Laxman et al. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14C12N9/20C12N9/42C12N9/48C12N9/58C12N9/66C11D3/386C14C1/06C12R1/645
CPCC12N9/20C12Y302/01006C12R1/645C12N9/6448C12N9/244C12N9/48C12N9/2474C14C1/065C12N9/58C12N1/14C12Y302/01035C12N1/145C12R2001/645Y02P10/20
Inventor 西塔·拉克斯曼·利亚里哈里什·班希拉尔·坎德尔瓦斯内哈尔·维贾伊·莫尔卡玛拉卡尔·莫缇拉姆·卡拉尔钱德拉·巴度·坎南·纳拉希姆汉萨拉瓦南·帕拉尼韦尔帕德马纳班·巴拉拉姆
Owner 科学和工业研究委员会