Effect of initial pH on production of ganoderic acid and polysaccharide by submerged fermentation of Ganoderma lucidum

Submerged fermentation production and characterization of intracellular triterpenoids from Ganoderma lucidum using HPLC-ESI-MS

“…The results showed that mycelia biomass and IT production reached a maximum at pH 5.5, and declined rapidly outside the pH range of 4.5-6.5. Our results were consistent with submerged fermentation of G. lucidum in an acidic pH environment (Fang and Zhong, 2002a). IT production Mycelia biomass pH IT production (mg/100 ml) Mycelia biomass (g/100 ml) RSM is an efficient statistical technique for optimization of multiple variables.…”

“…It was reported that G. lucidum prefers to grow in acidic conditions (Fang and Zhong, 2002a;Kim et al, 2006): the pH of the fermentation culture could affect fungal cell membrane function, cell morphology, and the availability of various nutrients. To determine the optimal pH, G. lucidum was cultivated in basal culture at pH ranging from 3.5 to 7.5 (Fig.…”

Optimization of fermentation media composition of ganoderma lucidum for improved production of antioxidant and antimicrobial compounds

“…[28] To find the suitable medium composition for enhanced production of EPS and antimicrobial compound, the G. lucidum was cultivated in Mushroom culture media containing various carbon sources (dextrose, maltose [29,30] It has been known that several complex nitrogen sources were desirable in fermentation media for higher fungus and In comparison with organic nitrogen source, inorganic nitrogen sources gave rise to relatively lower mycelial biomass and EPS production. [31] In present study modified media containing NH 4 Cl with yeast extract as chief nitrogen source was seen to be suitable for production of antioxidant & antimicrobial compound as compared with MCM.…”

The Effect of Potassium Phosphate as a pH Stabilizer on the Production of Gellan by Sphingomonas paucibilis NK-2000

“…The initial pH of the culture medium is a vital factor for cell growth and production of gellan by S. paucimobilis ATCC 31461 [2]. Optimal pH for the production of gellan by S. paucibilis NK2000 was also different from that for its cell growth as in production of other microbial metabolites [5,8,13].…”