Release of ferulic acid from corn cobs by alkaline hydrolysis |
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| Institution: | 1. Department of Chemical and Process Engineering, Genoa University, Via Opera Pia 15, I-16145 Genoa, Italy;2. Department of Chemical Engineering, Vigo University (Campus of Ourense), Polytechnical Building, As Lagoas, E-32004 Ourense, Spain;1. Pulp and Paper Research Division, BCSIR Laboratories, Dhaka, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh;2. Department of Chemistry, Eden Girls College, Dhaka, Bangladesh;1. Center for Waste Management – ‘International Research Center’, Sathyabama Institute of Science and Technology, Jeppiaar Nagar (OMR), Chennai 600 119, Tamil Nadu, India;2. Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India;3. Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;4. Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;1. State Key Laboratory of Agrobiotechnology and Key Laboratory of Soil Microbiology, Ministry of Agriculture, College of Biological Sciences, China Agricultural University, Beijing, China;2. School of Lifesciences, Kim Il Sung University, Pyongyang, Democratic People’s Republic of Korea;1. UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris-Saclay, 91300 Massy, France;2. UMR FARE, Chaire AFERE, Université de Reims Champagne-Ardenne, INRA, 51100 Reims, France;3. Chaire Agro-Biotechnologies Industrielles (ABI), AgroParisTech, 51110 Pomacle, France;4. UMR GMPA, AgroParisTech, INRA, Université Paris-Saclay, 78850 Grignon, France;1. The Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China;2. Jiangsu Key Laboratory for Bioresources of Saline Soils, Yancheng Teachers University, Yancheng, 224051, Jiangsu, China |
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| Abstract: | The process of corn cobs alkaline hydrolysis to produce solutions with high hydroxy-cinnamic acids content was investigated. In particular the attention was focused on the solubilisation of ferulic acid (FA) and related compounds, mainly p-coumaric acid (p-CA). Although these compounds have applications as antioxidants, the purpose of this work was to obtain FA solutions that can be used as feedstock for the biotechnological production of vanillin in future studies. The effects of different concentrations of NaOH (0.2 ≤ Ca ≤ 2.0N) and solid/liquid ratios (0.028 ≤ S/L ≤ 0.168 g/g) on the solubilisation of FA versus time have been investigated at room temperature. Optimal hydrolysis conditions (Ca = 0.5N, S/L = 0.084 g/g after 6 h) ensured the production of hydrolysates with relatively high contents of both FA (1171 ± 34 mg/L) and p-coumaric acid (2156 ± 64 mg/L), which can be used in future studies for the microbial transformation into vanillin. |
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