Yam bean starch: a novel substrate for citric acid production by the protease-negative mutant strain of Aspergillus niger

Growth of Cunninghamella elegans UCP 542 and production of chitin and chitosan using yam bean medium

“…Franco et al (2004) described constant values of pH during the "lag" phase and pH decrease during the exponential phase. That information of higher amount of the yam bean glucose and starch was previously mentioned by Sarangbin and Watanapokasin (1999), during the citric acid production. Amorim et al (2001) reported that during growth of C. elegans the pH of the media drops in the first 24 hrs and remained low (between 3 and 4) during the first 96 hrs of cultivation, probably because of the interaction between the medium substrate and the release of ions from the cell.…”

“…The leguminous produces comestible tubercles and seeds with high level of protein and lipids. The tubercles were used as a good starch source for several industrial purposes (Sarangbin and Watanapokasin, 1999;Stamford et al 1998;Stamford et al 2001). The main characteristic of yam bean is the simple manipulation and low nutrition requirements when compared with other similar cultures, and tuberous roots yields is up to 60 t/ha (Stamford et al 1998;Stamford et al 2001;Stamford et al 2003).…”

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.…”

Changes in the physiological properties and kinetics of citric acid accumulation via carbon ion irradiation mutagenesis of Aspergillus niger

“…However, A. niger, as an important microbial cell factory, remains the best choice for the production of citric acid due to its high yield of citric acid and its ability to ferment various cheap raw materials (Grewal and Kalra, 1995;Schuster et al, 2002;Pel et al, 2007;Wang et al, 2015). Different cheap raw materials have been employed to produce citric acid, including starch materials such as corn starch (Hu et al, 2014b), Yam bean starch (Sarangbin and Watanapokasin, 1999), and liquefied corn (Hu et al, 2014a), and cheap agricultural products such as orange peel (Torrado et al, 2011), apple pomace (Dhillon et al, 2011b), whey, and sweet potatoes (Betiku and Adesina, 2013).…”