Review
Biochemistry & Molecular Biology
Kemeng Zhou, Jian Yu, Yaohong Ma, Lei Cai, Lan Zheng, Weili Gong, Qing-ai Liu
Summary: Corn steep liquor (CSL) is a by-product of the wet milling process, which contains abundant organic matter and nutrients and has high resource potential. Researchers have been studying the comprehensive utilization of CSL, including its use as an inexpensive source of nitrogen, carbon, or vitamins in biotechnological production, as well as its applications in microbial culture mediums, low-cost animal feed, biosurfactants, and biostimulants.
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
(2022)
Article
Microbiology
Alejandro Lopez-Prieto, Lorena Rodriguez-Lopez, Myriam Rincon-Fontan, Jose Manuel Cruz, Ana Belen Moldes
Summary: A Bacillus strain in corn steep liquor (CSL) was found to produce biosurfactants, but the specific species responsible for production is still unidentified. The Bacillus strain isolated from CSL was identified as Aneurinibacillus aneurinilyticus and found to produce both cell-bound and extracellular biosurfactants, composed of a mixture of lipopeptides and amino acids. The biosurfactant extracts were characterized using electrospray ionization mass spectrometry.
MICROBIOLOGICAL RESEARCH
(2021)
Article
Agriculture, Multidisciplinary
Bibek Byanju, Swastik Sen, Thomas Mansell, Buddhi P. P. Lamsal
Summary: Corn steep liquor (CSL) and thin stillage were evaluated as growth media for recombinant Lactococcus lactis to produce antifreeze proteins (AFPs). Light CSL and thin stillage were optimized with additives and trace elements to enhance the growth of wild-type and recombinant strains. The fermentation supernatants showed longer times to supercool and freeze, indicating potential use as antifreeze compounds in frozen food and non-food applications.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Horticulture
Ivan Navarro-Morillo, Sofia Pardo-Pina, Francisco Garcia-Sanchez, Juan Manuel Ruiz, Santiago Laserna-Arcas, Felix Plasencia, Jose M. Camara-Zapata
Summary: Salinity is a global problem caused by irrigation with salty water, excessive fertilization, or poor leaching capacity in soils. Biostimulants, like corn steep liquor (CSL), can enhance salt tolerance in plants by reducing the uptake and accumulation of toxic ions. This study found that CSL application improved photosynthetic efficiency and reduced the generation of reactive oxygen species, resulting in reduced phytotoxicity and increased growth of pepper plants under saline conditions.
Article
Biotechnology & Applied Microbiology
Ksenia Lvova, Andrea Martinez-Arcos, Alejandro Lopez-Prieto, Xanel Vecino, Ana Belen Moldes, Jose Manuel Cruz
Summary: The importance of this study lies in the discovery that corn steep liquor (CSL) can be used as a sole source of nutrients for producing biosurfactants through controlled fermentation. It also evaluates the potential of Aneurinibacillus aneurinilyticus, isolated from CSL, to produce extracellular and cell-bound biosurfactants using secondary raw materials as a nutrient source. The study found that optimal conditions for producing both types of biosurfactants were achieved by fermenting A. aneurinilyticus in CSL at 40 degrees C for 19 days using a concentration of 250 g L-1; resulting in a mean value of 6 g L-1 for extracellular biosurfactants and favorable CMC concentrations for detecting cell-bound biosurfactant extracts.
FERMENTATION-BASEL
(2023)
Article
Nutrition & Dietetics
Yulin Ma, Xu Chen, Muhammad Zahoor Khan, Jianxin Xiao, Shuai Liu, Jingjun Wang, Gibson Maswayi Alugongo, Zhijun Cao
Summary: This study evaluated the effect of CSL and urea-alkali pretreatment on enhancing ruminal microbiome degradation and hydrolysis of rice straw. The results showed that the pretreatment altered the structure of RS, enhanced microbial colonization, and induced adhesion of specific bacterial species.
FRONTIERS IN NUTRITION
(2022)
Article
Food Science & Technology
Benita Perez-Cid, Lorena Rodriguez-Lopez, Ana Belen Moldes, Jose Manuel Cruz, Xanel Vecino
Summary: This study investigated the effects of introducing biosurfactant extracts into juice matrices on sugar consumption, pH, and biomass formation. The results showed that the addition of biosurfactant extracts reduced the hydrolysis rate of polymeric sugars and influenced the changes in soluble sugars and biomass in the juices.
Article
Microbiology
Hajime Kobori, Jing Wu, Hirohide Takemura, Jae-Hoon Choi, Naoto Tada, Hirokazu Kawagishi
Summary: This study focused on reducing the production costs of fairy chemicals (FCs) and the mycelia of the FCs-producing fungus by investigating the use of different food industrial by-products as nutritional additives. It was found that corn steep liquor was the most effective additive in increasing the production of FCs and mycelia, with optimal concentrations for each. These results are expected to facilitate the practical use of FCs and the mycelia of FCs-producing fungi.
Article
Polymer Science
Eduardo J. Gudina, Marcia R. Couto, Soraia P. Silva, Elisabete Coelho, Manuel A. Coimbra, Jose A. Teixeira, Ligia R. Rodrigues
Summary: A low-cost culture medium (CSLM) was developed for EPS production by Rhizobium viscosum CECT908, using sugarcane molasses and corn steep liquor as the sole ingredients. The EPS produced in this medium showed higher yield stress and flow consistency index, indicating its potential use in Microbial Enhanced Oil Recovery.
Article
Biophysics
Xiaoyan Wang, Jin Gao, Yu Gao, Linlin Zhang, Congchao Xu, Qintong Li, Lin Li, Jianliang Xue
Summary: In this study, a highly effective surfactant producer strain, Bacillus Cereus GX7, was isolated from the oil tank bottom sludge of Shengli Oil Field in China. The biosurfactant produced by GX7 was identified as surfactin, a lipopeptide surfactant, through TLC, FT-IR, and LC-MS/MS analysis. The fermentation process of GX7 was optimized using single-factor experiments, focusing on the composition of fermentation medium and fermentation conditions. Glucose and peptone were found to be the best carbon and nitrogen sources, and the optimum temperature, inoculum amount, pH, rotation speed, and fermentation time for the strain were determined to be 30°C, 1%, 7.5, 150 rpm, and 48 h, respectively. After optimization, the surface tension and emulsification index of the fermentation broth were 26.84 mN/m and 57.84%, respectively. Furthermore, the biosurfactant produced by GX7 demonstrated good stability over a wide range of temperature, pH, and salt concentration.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Multidisciplinary Sciences
A. Lopez-Prieto, A. B. Moldes, J. M. Cruz, B. Perez-Cid
Summary: In this study, the chemical characterization and surface-active properties of two biosurfactants extracted from corn steep liquor were compared. The biosurfactant extracted with chloroform (BS1) had a higher phospholipids content and showed greater similarity to the commercial surfactant lecithin. The biosurfactant extracted with ethyl acetate (BS2) performed better in solubilizing cuprous oxide in water. Optimum conditions for solubilizing cuprous oxide were also determined. It was found that the presence of phospholipids inhibited the solubilization of copper-based pesticides in water.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Andrea Martinez-Arcos, Alejandro Lopez-Prieto, Lorena Rodriguez-Lopez, Benita Perez-Cid, Xanel Vecino, Ana Belen Moldes, Jose Manuel Cruz
Summary: The research demonstrated that the biosurfactant extracted from corn steep liquor not only has surfactant capacity and antimicrobial activity, but can also serve as a natural preservative for fruits. Surface analysis revealed that the biosurfactant could reduce roughness, shape changes, and increase hydrophobicity of fruit surfaces.
APPLIED SCIENCES-BASEL
(2021)
Article
Energy & Fuels
Manish Pant, Tanuja Joshi, Pramod Kumar Omre, Pratima Awasthi, Leela Chauhan
Summary: The study showed that optimizing process parameters for producing pyruvate using pre-treated rice straw and corn steep was crucial for influencing the pyruvate concentration. The results of the study demonstrated the effects of carbon sources on the overall yield of pyruvate and reducing sugars.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Biotechnology & Applied Microbiology
Italo Jose Batista Durval, Hugo Morais Meira, Bruno Oliveira de Veras, Raquel Diniz Rufino, Attilio Converti, Leonie Asfora Sarubbo
Summary: This study successfully synthesized silver nanoparticles with antimicrobial potential using biosurfactant produced by Bacillus cereus UCP 1615 as a stabilizer. Characterization of the nanoparticles confirmed their formation, predominantly spherical structure, and an average size of about 20 nm. Antimicrobial tests showed significant inhibitory effects of the silver nanoparticles on the growth of Penicillium fellutanum and Aspergillus niger.
FERMENTATION-BASEL
(2021)
Article
Biochemistry & Molecular Biology
Yufeng Xiao, Lining Zheng, Shengyi Wang, Meiqi Dong, Ao Gao, Zhe Han, Shuang Liang, Hao Zhang
Summary: This study investigated the bioremediation effects of Bacillus cereus N1, a metribuzin-degrading bacterium, immobilized with corn straw biochar (BC). The results showed that 72.15% of strain N1 and 15.31% of metribuzin were adsorbed by BC, with the highest absorption peak intensity obtained by the immobilized bacterial microspheres (PSBN1). Various experiments were conducted to investigate the mechanism of metribuzin removal by PSBN1 and to determine the optimal degradation conditions. PSBN1 exhibited high degradation efficiency, with 62.26% of metribuzin degraded in 120 days of storage at 4 degrees C. The degradation rates of metribuzin were also satisfactory in both sterilized and non-sterilized soils. The bioremediation effect of PSBN1 was verified through the recovery of plant weight and the restoration of soil enzymatic activities. These findings provide valuable evidence for the commercialization and long-term preservation of metribuzin-degrading microbial agents.
PROCESS BIOCHEMISTRY
(2023)
Article
Fisheries
Neill Jurgens Goosen, Lourens Francois De Wet, Johann Ferdinand Gorgens
AQUACULTURE INTERNATIONAL
(2018)
Article
Agricultural Engineering
Thapelo Mokomele, Leonardo da Costa Sousa, Venkatesh Balan, Eugene van Rensburg, Bruce E. Dale, Johann F. Gorgens
BIORESOURCE TECHNOLOGY
(2019)
Article
Chemistry, Analytical
D. R. Naron, F-X Collard, L. Tyhoda, J. F. Gorgens
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2019)
Article
Chemistry, Analytical
Logan Jeremy Brown, Francois-Xavier Collard, Johann Gorgens
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2019)
Article
Biotechnology & Applied Microbiology
Mieke Nieder-Heitmann, Kathleen Haigh, Johann F. Gorgens
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2019)
Article
Biotechnology & Applied Microbiology
Oscar K. K. Bedzo, Kim Trollope, Lalitha D. Gottumukkala, Gerhardt Coetzee, Johann F. Gorgens
BIOTECHNOLOGY PROGRESS
(2019)
Article
Biotechnology & Applied Microbiology
Oscar K. K. Bedzo, Mohsen Mandegari, Johann F. Gorgens
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2019)
Article
Agricultural Engineering
D. R. Naron, F. -X. Collard, L. Tyhoda, J. F. Gorgens
INDUSTRIAL CROPS AND PRODUCTS
(2019)
Article
Thermodynamics
Eunice Sefakor Dogbe, Mohsen Mandegari, Johann F. Gorgens
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Thobeka Mkwananzi, Mohsen Mandegari, Johann F. Gorgens
Article
Agricultural Engineering
H. M. Raoul Ozudogru, M. Nieder-Heitmann, K. F. Haigh, J. F. Gorgens
INDUSTRIAL CROPS AND PRODUCTS
(2019)
Review
Biotechnology & Applied Microbiology
Bianca A. Brandt, Trudy Jansen, Johann F. Gorgens, Willem H. van Zyl
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2019)
Article
Agricultural Engineering
Kutemba K. Kapanji, Kathleen F. Haigh, Johann F. Gorgens
BIORESOURCE TECHNOLOGY
(2019)
Article
Green & Sustainable Science & Technology
Mieke Nieder-Heitmann, Kathleen F. Haigh, Johann F. Gorgens
JOURNAL OF CLEANER PRODUCTION
(2019)
Article
Green & Sustainable Science & Technology
Salman Soltanian, Mortaza Aghbashlo, Somayeh Farzad, Meisam Tabatabaei, Mohsen Mandegari, Johann F. Gorgens