Repeated batch production of citric acid from sugarcane molasses using recycled solid-state surface culture ofAspergillus niger

Artrocarpus heterophyllus—a potential substrate for citric acid biosynthesis using Aspergillus niger

“…Molasses (Garg & Sharma, 1992;Park & Barathi, 1991;Esuoso Kayode, 1994), cheese whey (El-Samragy, Khorshid, Foda, & Shehata, 1996), whey permeate (Hossain, Brooks, & Maddox, 1983), date syrup (Roukas & Kotzekidou, 1997), banana extract (Sassi, Ruggeri, Specchia, & Gianetto, 1991), maize zea (Esuoso Koyode, Oderinde Rotini, & Okogun Joseph, 1991), orange processing waste (Aravantinoszafiris, Tzia, Oreopaulai, & Thomopoulos, 1994), yam bean starch (Sarangbin & Watanapakansin, 1999) rape seed oil (Earyst, 1998), carob pod (Fyllos, 1998) and root crops (Angumeenal, Kamalakannan, Prabhu, & Venkappayya, 2003) are some among them. We have chosen in this study, a hitherto untried Artocarpus heterophyllus (jack fruit) carpel fibre as a substrate for biosynthesis of citric acid fermentation using Aspergillus niger.…”

Continuous production of citric acid from sugarcane molasses using a combination of submerged immobilized and surface stabilized cultures of Aspergillus niger KCU 520

“…2A kgM-3h -I) and citric acid product concentration in the effluent (110 kg M -3) than figures from repeated batch or semicontinuous processes using either surface (Garg and Sharma, 1991) or immobilized cultures of Aspergillus niger KCU 520 (Garg and Sharma, 1992 production reported here appears to be quite promising and has the potential of being developed into an industrial process.…”

“…1985; Garg and Sharma, 1992), and on polyurethane foam (Lee, et al, 1989;Vassilev and Vassileva, 1990). In addition, Kautola, et al (1991a) and Rymowicz, et al (1993) Aspergillus niger (Garg and Sharma, 1991) was used in this study. It was maintained on potato o dextrose agar slants, stored at 4 C and renewed every month.…”

“…Sugarcane molasses, from a local sugar mill, was used as a substrate. Prior to fermentation crude molasses was clarified by hexacyanoferrate treatment (Garg and Sharma, 1991). The clarified sugarcane molasses containing 10-12% sugar, 0.3% NH4No 3, 0.1% K2HPO 4 and 0.03% MgSO 4.…”

Fungal generation of organic acids for removal of lead from contaminated soils

“…Shu and Johnson (1948) reported, as referenced by Grewal and Kalra (1995), that the maximum rate o f production of citric acid was achieved at sugar concentrations o f 14-22%. When using raw molasses as substrate, it is usually diluted to sugar concentrations o f 12-15% for optimal yield of citric acid , Garg and Sharma, 1991. Optimal yields o f citric acid were observed at sugar concentrations o f 10% (w/v) for maltose, sucrose, mannose and fructose, with the exception o f glucose (7.5%) (Xu et al, 1989).…”