Process for submerged cultivation of Rhizopus arrhizus CNMN FD 03 fungus strain, producer of lipases

The invention relates to biotechnology, and in particular to a process for submerged cultivation of Rhizopus arrhizus CNMN FD 03 fungus strain, producer of lipases and can be used in the microbiological industry for obtaining lipolytic enzymes with wide application in the food industry, production a...

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Hauptverfasser: DVORNINA Elena, BULHAC Ion, MATROI Alexandra, CLAPCO Steliana, URECHE Dumitru, DANILESCU Olga, LABLIUC Svetlana, CILOCI Alexandra
Format: Patent
Sprache:eng ; rum ; rus
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Zusammenfassung:The invention relates to biotechnology, and in particular to a process for submerged cultivation of Rhizopus arrhizus CNMN FD 03 fungus strain, producer of lipases and can be used in the microbiological industry for obtaining lipolytic enzymes with wide application in the food industry, production and processing of fats and vegetable oils, in medicine as a therapeutic and diagnostic agent.The process, according to the invention, provides for the preparation of a spore suspension of the strain grown for 30 days on a malt-agar medium, inoculation of the suspension in an amount of 5 vol.% in a nutrient aqueous medium containing, g/L: soy flour - 35.0, (NH4)2SO4 - 1.0, KH2PO4 - 5.0, with the simultaneous addition of 0.010 g/L of [Ca(L)3][Co(NCS)4], where L - dimethylpyridine-2,6-dicarboxylate, and cultivation with continuous stirring at 180-200 rpm at the temperature of 28-30°C for 24 hours.The result of the invention consists in increasing the biosynthesis of lipolytic enzymes and reducing the duration of cultivation of the strain by 24 hours. Invenţia se referă la biotehnologie, şi anume la un procedeu de cultivare submersă a tulpinii de fungi Rhizopus arrhizus CNMN FD 03, producătoare de lipaze, şi poate fi utilizată în industria microbiologică pentru producerea enzimelor lipolitice cu aplicare largă în industria alimentară, de producere şi procesare a grăsimilor şi uleiurilor vegetale, în medicină ca mijloc terapeutic şi diagnostic. Procedeul, conform invenţiei, prevede obţinerea suspensiei de spori a tulpinii crescute timp de 30 de zile pe un mediu de malţ-agar, inocularea suspensiei în cantitate de 5% v/v într-un mediu nutritiv apos ce conţine, g/L: făină de soia - 35,0, (NH4)2SO4 - 1,0, KH2PO4 - 5,0, cu adăugarea concomitentă a 0,010 g/L de [Ca(L)3][Co(NCS)4], unde L - dimetilpiridin-2,6-dicarboxilat, şi cultivarea la agitare continuă de 180-200 rot/min la temperatura de 28-30°C în decurs de 24 de ore.Rezultatul invenţiei constă în sporirea biosintezei enzimelor lipolitice şi reducerea duratei de cultivare a tulpinii cu 24 de ore. Изобретение относится к биотехнологии, а именно к способу глубинного культивирования штамма гриба Rhizopus arrhizus CNMN FD 03, продуцента липаз, и может быть использовано в микробиологической промышленности для получения липолитических ферментов с широким применением в пищевой промышленности, производстве и переработке жиров и растительных масел, в медицине в качестве терапевтического и диагностического средства.Способ, согла