Name | corn syrup |
Synonyms | corn syrup |
Storage Condition | Room Temprature |
Use | Corn steep liquor powder is widely used in antibiotics (penicillin, erythromycin, gentamicin, spectinomycin, chlortetracycline, etc.), vitamins (VC, VB2, etc.), amino acids (glutamic acid, lysine, phenylalanine, etc.), enzyme preparations (amylase, glucoamylase, etc.) and other fermentation industries, in the biological fermentation process as water-soluble plant protein and water-soluble vitamins and other nutrient supplements. |
Reference Show more | 1. Wu Wei-ping, Chen Jie, Li Ya-Gan, Chen Lijie, Duan Yuxi. Optimization of chlamydospore-producing fermentation process by Trichoderma spinosum using response surface methodology [J]. Chinese Journal of bioengineering, 2013, 33(12):97-104. 2. Zhang Feng, Wu Liu Juan, Li Li, Wang can, Hu Yibo, Ding Xuezhi, Xia Liqiu. Optimization of spinosad fermentation medium using genetic algorithm and neural network [J]. Natural science journal of Hunan Normal University, 2017,40(05):36-43. 3. Liu Juan Wu, Li Li, Xiang Tao Mo, et al. Optimization of fermentation medium and preparation of microcapsules for antitumor engineering bacteria Escherichia coli Nissle 1917 [J]. Journal of Microbiology, 2019, 039(003):7-15. 4. Wu Weiping, Chen Jie, Li Yakan, etc. Study on the liquid fermentation conditions for chlamydospore production by Trichoderma spinosum [J]. Journal of Shanghai Jiaotong University (Agricultural Science Edition), 2013, 26 (06):19-23. 5. Lin Zhenya, Wu Qiong, Sun Ruiyan, et al. Optimization of fermentation conditions for natamycin and chitinase co-expression by Streptomyces A01-chit33CT [J]. Chinese Journal of bioengineering, 2012, 32(10). 6. Zonsheng Zou, Yuya Wang, Yunying Zhao, et al. Screening of high-yield cellulase mutants and optimization of cellulase-producing conditions [J]. Food Science, 2019, 40(06):56-62. 7. Azeko, S. T., et al. "Biodegradation of linear low density polyethylene by Serratia marcescens subsp. marcescens and its cell free extracts." Waste and biomass valorization 6.6 (2015): 1047-1057.https://doi.org/10.1007/s12649-015-9421-0 8. Salifu, Tahiru Azeko. Biodegradation and recycling of polyethylene into composite building materials. Diss. 2015. 9. [IF=3.703] Azeko S. T. et al."Biodegradation of Linear Low Density Polyethylene by Serratia marcescens subsp. marcescens and its Cell Free Extracts."Waste Biomass Valori. 2015 Dec;6(6):1047-1057 |
overview
Corn steep liquor is the concentrate of corn soaking water. Corn soaking water is the wastewater produced in the process of corn wet processing starch. It is an acidic high-concentration organic wastewater. The pH value of the wastewater is about 3.5. my country's annual corn starch The output reaches 26 million tons, and 20.8 million tons of corn soaking water are produced. The treatment method commonly used in China is to concentrate the corn soaking water into corn steep liquor, corn steep liquor was used as a medium for biological fermentation.
physical and chemical properties and structure
the composition of corn steep liquor is: water 50 ~ 60%; Dry matter 40 ~ 50%: crude protein 45%, reducing sugar 10%, vitamin 2%, lactic acid 18%, potassium 4%, phytic acid 2%, sulfite 0.6%. The main nutritional components of corn steep liquor include protein, amino acids, reducing sugars, vitamins, lactic acid, etc. Toxic and anti-nutritional factors of corn steep liquor include: excessive potassium, phytic acid, sulfite, aspergillus toxin, etc. Excessive potassium can damage the digestive system of livestock and poultry, leading to diarrhea and even poisoning death of livestock and poultry; phytic acid is an organic phosphorus acid compound that affects the utilization of trace elements in food sources by livestock and poultry and hinders endogenous trace elements Reabsorption reduces the digestibility of protein in livestock and poultry; sulfite destroys vitamin B1 coenzyme in livestock and poultry, causing metabolic disorders in livestock and poultry, producing toxic substances with incomplete metabolism, and long-term intake, it can cause vitamin A, D and E deficiency, affect the growth, lactation and reproduction of animals, etc.; aspergillus toxin in corn steep liquor can cause animal poisoning and even death.
Preparation
the quantitative corn steep liquor is sent to the anionic resin column adsorption tank, after stirring for 1.0 hours, the corn steep liquor is sent to the cationic resin column adsorption tank for 1.2 hours, and the purpose of anionic resin column adsorption and cationic resin column adsorption is to remove impurities and decolorize. The corn steep liquor after cation and cation adsorption is sent to the ultrafiltration membrane separator, the pressure of the corn steep liquor at the inlet of the ultrafiltration membrane separator is controlled to be 0.59Mpa, and the pressure of the corn steep liquor at the outlet is 0.51Mpa, so that the corn steep liquor is filtered through the ultrafiltration membrane to remove impurities, and the impurities are discharged through the impurity outlet arranged on the ultrafiltration membrane separator. The corn steep liquor filtered by the ultrafiltration membrane is sent to the reverse osmosis membrane separator, and the inlet pressure of the corn steep liquor of the reverse osmosis membrane separator is adjusted to 3.9Mpa, and the outlet pressure of the corn steep liquor is 3.3Mpa, so that the corn steep liquor passes through the reverse osmosis membrane The separator filters out impurities to obtain refined corn steep liquor, and the filtered impurities pass through the reverse osmosis membrane.