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Monosodium Glutamate

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https://www.readbyqxmd.com/read/27909736/discovery-and-history-of-amino-acid-fermentation
#1
Shin-Ichi Hashimoto
There has been a strong demand in Japan and East Asia for L-glutamic acid as a seasoning since monosodium glutamate was found to present umami taste in 1907. The discovery of glutamate fermentation by Corynebacterium glutamicum in 1956 enabled abundant and low-cost production of the amino acid, creating a large market. The discovery also prompted researchers to develop fermentative production processes for other L-amino acids, such as lysine. Currently, the amino acid fermentation industry is so huge that more than 5 million metric tons of amino acids are manufactured annually all over the world, and this number continues to grow...
December 2, 2016: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/27890806/the-endocrine-disrupting-potential-of-monosodium-glutamate-msg-on-secretion-of-the-glucagon-like-peptide-1-glp-1-gut-hormone-and-glp-1-receptor-interaction
#2
Maeve Shannon, Brian Green, Gary Willars, Jodie Wilson, Natalie Matthews, Joanna Lamb, Anna Gillespie, Lisa Connolly
Monosodium glutamate (MSG) is a suspected obesogen with epidemiological evidence positively correlating consumption to increased body mass index and higher prevalence of metabolic syndrome. ELISA and high content analysis (HCA) were employed to examine the disruptive effects of MSG on the secretion of enteroendocrine hormone glucagon-like peptide-1 (GLP-1) and GLP-1 receptor (GLP-1R), respectively. Following 3h MSG exposure of the enteroendocrine pGIP/neo: STC-1 cell line model (500μg/ml) significantly increased GLP-1 secretion (1...
November 24, 2016: Toxicology Letters
https://www.readbyqxmd.com/read/27880963/enhanced-production-of-gamma-aminobutyric-acid-by-optimizing-culture-conditions-of-lactobacillus-brevis-hye1-isolated-from-kimchi-a-korean-fermented-food
#3
Hee Seon Lim, In-Tae Cha, Seong Woon Roh, Hae-Hun Shin, Myung-Ji Seo
This study evaluated the effects of culture conditions, including carbon and nitrogen sources, L-monosodium glutamate (MSG), and initial pH, on gamma-aminobutyric acid (GABA) production by Lactobacillus brevis HYE1 isolated from kimchi, a Korean traditional fermented food. L. brevis HYE1 was screened by the production analysis of GABA and genetic analysis of glutamate decarboxylase gene, resulting in 14.64 mM GABA after 48 h of cultivation in MRS media containing 1% (w/v) MSG. In order to increase GABA production by L...
November 23, 2016: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27872968/new-functions-and-potential-applications-of-amino-acids
#4
Hisayuki Uneyama, Hisamine Kobayashi, Naoto Tonouchi
Currently, several types of amino acids are being produced and used worldwide. Nevertheless, several new functions of amino acids have been recently discovered that could result in other applications. For example, oral stimulation by glutamate triggers the cephalic phase response to prepare for food digestion. Further, the stomach and intestines have specific glutamate-recognizing systems in their epithelial mucosa. Regarding clinical applications, addition of monosodium glutamate to the medicinal diet has been shown to markedly enhance gastric secretion in a vagus-dependent manner...
November 22, 2016: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/27832295/present-global-situation-of-amino-acids-in-industry
#5
Naoto Tonouchi, Hisao Ito
At present, amino acids are widely produced and utilized industrially. Initially, monosodium glutamate (MSG) was produced by extraction from a gluten hydrolysate. The amino acid industry started using the residual of the lysate. The discovery of the functions of amino acids has led to the expansion of their field of use. In addition to seasoning and other food use, amino acids are used in many fields such as animal nutrients, pharmaceuticals, and cosmetics. On the other hand, the invention of the glutamate fermentation process, followed by the development of fermentation methods for many other amino acids, is no less important...
November 11, 2016: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/27825986/intracerebroventricular-injection-of-ghrelin-decreases-wheel-running-activity-in-rats
#6
Yumiko Miyatake, Tetsuya Shiuchi, Kazuaki Mawatari, Satomi Toda, Yasuko Taniguchi, Akari Futami, Fukiko Sato, Masashi Kuroda, Mayu Sebe, Rie Tsutsumi, Nagakatsu Harada, Yasuhiko Minokoshi, Tadahiro Kitamura, Koro Gotoh, Masaki Ueno, Yutaka Nakaya, Hiroshi Sakaue
There is an increasing interest in elucidating the molecular mechanisms by which voluntary exercise is regulated. In this study, we examined how the central nervous system regulates exercise. We used SPORTS rats, which were established in our laboratory as a highly voluntary murine exercise model. SPORTS rats showed lower levels of serum ghrelin compared with those of the parental line of Wistar rats. Intracerebroventricular and intraperitoneal injection of ghrelin decreased wheel-running activity in SPORTS rats...
November 5, 2016: Peptides
https://www.readbyqxmd.com/read/27794467/gaba-production-and-structure-of-gadb-gadc-genes-in-lactobacillus-and-bifidobacterium-strains-from-human-microbiota
#7
R A Yunes, E U Poluektova, M S Dyachkova, K M Klimina, A S Kovtun, O V Averina, V S Orlova, V N Danilenko
Gamma-amino butyric acid (GABA) is an active biogenic substance synthesized in plants, fungi, vertebrate animals and bacteria. Lactic acid bacteria are considered the main producers of GABA among bacteria. GABA-producing lactobacilli are isolated from food products such as cheese, yogurt, sourdough, etc. and are the source of bioactive properties assigned to those foods. The ability of human-derived lactobacilli and bifidobacteria to synthesize GABA remains poorly characterized. In this paper, we screened our collection of 135 human-derived Lactobacillus and Bifidobacterium strains for their ability to produce GABA from its precursor monosodium glutamate...
October 26, 2016: Anaerobe
https://www.readbyqxmd.com/read/27777467/characterization-of-swiftlet-edible-bird-nest-a-mucin-glycoprotein-and-its-adulterants-by-raman-microspectroscopy
#8
Eric K S Shim, Gleen F Chandra, S Pedireddy, Soo-Y Lee
Edible bird's nest (EBN) is made from the glutinous salivary secretion of highly concentrated mucin glycoprotein by swiftlets (genus Aerodramus or Collocalia) native to the Indo-Pacific region. The unique Raman spectrum of EBN has vibrational lines that can be assigned to peptides and saccharides in the glycoprotein, and it can be used to screen for adulteration. The common edible adulterants classified into two types. Type I adulterants, such as fish bladder, pork skin, karaya gum, coralline seaweed, agar strips, and tremella fungus, were solids which adhered externally on the surface of the EBN cement...
September 2016: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/27754020/chl-02-3-evidence-and-initiatives-in-the-dietary-salt-reduction-in-china
#9
Chao Chu, Yumeng Cao, Jianjun Mu
BACKGROUND: Salt reduction are crucial in the management of hypertension. Over the past few decades, Series of national activities and studies focusing on salt reduction and salt intake education were promoted by the Chinese government. However, the current status of dietary sodium and potassium intake of Chinese population is unclear. OBJECTIVE: The aim of this study is to analyze the status of dietary salt and potassium intake in the Chinese population through summarizing the previous studies from 1998 to 2011 and then propose appropriate initiatives...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27741439/experimentally-induced-masseter-pain-changes-masseter-but-not-sternocleidomastoid-muscle-related-activity-during-mastication
#10
Fernanda Pasinato, Clarissa C Santos-Couto-Paz, Jorge Luis Lopes Zeredo, Sergio Bruzadelli Macedo, Eliane C R Corrêa
The aim of this study was to verify the effects of induced masseter-muscle pain on the amplitude of muscle activation, symmetry and coactivation of jaw- and neck-muscles during mastication. Twenty-eight male volunteers, mean age±SD 20.6±2.0years, participated in this study. Surface electromyography of the masseter and sternocleidomastoid (SCM) muscles was performed bilaterally during mastication of a gummy candy before and after injections of monosodium glutamate solution and isotonic saline solution. As a result, we observed a decrease in the amplitude of activation of the masseter muscle on the working side (p=0...
December 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/27725383/numerical-evaluation-of-efficacy-of-glutamate-on-gastrointestinal-motility-rapid-mri-study
#11
Shinsuke Nakayama, Hidemi Teramoto
 The umami taste amino acid, glutamate acts as a signaling molecule in multiple cellular systems in the body, including the brain and gastrointestinal tract. Therefore, glutamate may affect appetite by modulating gastrointestinal motility as well as through taste perception. In this study, we examined the effect of glutamate on gastric emptying and duodenal motility, by using rapid magnetic resonance imaging (MRI). Ten healthy male volunteers participated in the measurements. Abdominal coronal MR images were successively acquired after ingestion of a liquid meal with and without monosodium L-glutamate (MSG)...
2016: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/27714637/headaches-a-review-of-the-role-of-dietary-factors
#12
Zoya Zaeem, Lily Zhou, Esma Dilli
Dietary triggers are commonly reported by patients with a variety of headaches, particularly those with migraines. The presence of any specific dietary trigger in migraine patients varies from 10 to 64 % depending on study population and methodology. Some foods trigger headache within an hour while others develop within 12 h post ingestion. Alcohol (especially red wine and beer), chocolate, caffeine, dairy products such as aged cheese, food preservatives with nitrates and nitrites, monosodium glutamate (MSG), and artificial sweeteners such as aspartame have all been studied as migraine triggers in the past...
November 2016: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/27699780/diet-and-headache-part-1
#13
Vincent T Martin, Brinder Vij
BACKGROUND: The role of diet in the management of the headache patient is a controversial topic in the headache field. OBJECTIVES: To review the evidence supporting the hypothesis that specific foods or ingredients within foods and beverages trigger attacks of headache and/or migraine and to discuss the use of elimination diets in the prevention of headache disorders METHODS: This represents part 1 of a narrative review of the role of diet in the prevention of migraine and other headache disorders...
October 2016: Headache
https://www.readbyqxmd.com/read/27660157/probiotics-supplemented-with-omega-3-fatty-acids-are-more-effective-for-hepatic-steatosis-reduction-in-an-animal-model-of-obesity
#14
Nazarii Kobyliak, Tetyana Falalyeyeva, Petro Bodnar, Tetyana Beregova
Today probiotics have been suggested as a treatment for the prevention of NAFLD. Omega-3 fatty acid supplementation may have beneficial effects in regulating hepatic lipid metabolism, adipose tissue function and inflammation. The present study was designed to determine whether probiotics plus omega-3 are superior to probiotics alone on the monosodium glutamate (MSG)-induced NAFLD model in rats. We included 60 rats divided into four groups, 15 animals in each. Rats of group I were intact. Newborn rats of groups II-IV were injected with MSG...
September 22, 2016: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/27642938/chl-02-3-evidence-and-initiatives-in-the-dietary-salt-reduction-in-china
#15
Chao Chu, Yumeng Cao, Jianjun Mu
BACKGROUND: Salt reduction are crucial in the management of hypertension. Over the past few decades, Series of national activities and studies focusing on salt reduction and salt intake education were promoted by the Chinese government. However, the current status of dietary sodium and potassium intake of Chinese population is unclear. OBJECTIVE: The aim of this study is to analyze the status of dietary salt and potassium intake in the Chinese population through summarizing the previous studies from 1998 to 2011 and then propose appropriate initiatives...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27602272/novel-fermented-chickpea-milk-with-enhanced-level-of-%C3%AE-aminobutyric-acid-and-neuroprotective-effect-on-pc12-cells
#16
Wen Li, Mingming Wei, Junjun Wu, Xin Rui, Mingsheng Dong
In this study, novel fermented chickpea milk with high γ -aminobutyric acid (GABA) content and potential neuroprotective activity was developed. Fermentation starter that can produce GABA was selected from 377 strains of lactic acid bacteria isolated from traditional Chinese fermented foods. Among the screened strains, strain M-6 showed the highest GABA-producing capacity in De Man-Rogosa and Sharp (MRS) broth and chickpea milk. M-6 was identified as Lactobacillus plantarum based on Gram staining, API carbohydrate fermentation pattern testing, and 16s rDNA sequencing...
2016: PeerJ
https://www.readbyqxmd.com/read/27598115/-13-c-nmr-based-metabolomic-profiling-of-typical-asian-soy-sauces
#17
Ghulam Mustafa Kamal, Bin Yuan, Abdullah Ijaz Hussain, Jie Wang, Bin Jiang, Xu Zhang, Maili Liu
It has been a strong consumer interest to choose high quality food products with clear information about their origin and composition. In the present study, a total of 22 Asian soy sauce samples have been analyzed in terms of (13)C-NMR spectroscopy. Spectral data were analyzed by multivariate statistical methods in order to find out the important metabolites causing the discrimination among typical soy sauces from different Asian regions. It was found that significantly higher concentrations of glutamate in Chinese red cooking (CR) soy sauce may be the result of the manual addition of monosodium glutamate (MSG) in the final soy sauce product...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27597864/chronic-glucocorticoid-rich-milieu-and-liver-dysfunction
#18
Hernán Gonzalo Villagarcía, Vanesa Sabugo, María Cecilia Castro, Guillermo Schinella, Daniel Castrogiovanni, Eduardo Spinedi, María Laura Massa, Flavio Francini
We investigated the impact of chronic hypercorticosteronemia (due to neonatal monosodium L-glutamate, MSG, and treatment) on liver oxidative stress (OS), inflammation, and carbohydrate/lipid metabolism in adult male rats. We evaluated the peripheral concentrations of several metabolic and OS markers and insulin resistance indexes. In liver we assessed (a) OS (GSH and protein carbonyl groups) and inflammatory (IL-1b, TNFa, and PAI-1) biomarkers and (b) carbohydrate and lipid metabolisms. MSG rats displayed degenerated optic nerves, hypophagia, low body and liver weights, and enlarged adipose tissue mass; higher peripheral levels of glucose, triglycerides, insulin, uric acid, leptin, corticosterone, transaminases and TBARS, and peripheral and liver insulin resistance; elevated liver OS, inflammation markers, and glucokinase (mRNA/activity) and fructokinase (mRNA)...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/27549808/extracellular-expression-of-glutamate-decarboxylase-b-in-escherichia-coli-to-improve-gamma-aminobutyric-acid-production
#19
Anqi Zhao, Xiaoqing Hu, Ye Li, Cheng Chen, Xiaoyuan Wang
Escherichia coli overexpressing glutamate decarboxylase GadB can produce gamma-aminobutyric acid with addition of monosodium glutamate. The yield and productivity of gamma-aminobutyric acid might be significantly improved if the overexpressed GadB in E. coli cells can be excreted outside, where it can directly transforms monosodium glutamate to gamma-aminobutyric acid. In this study, GadB was fused to signal peptides TorA or PelB, respectively, and overexpressed in E. coli BL21(DE3). It was found that TorA could facilitate GadB secretion much better than PelB...
December 2016: AMB Express
https://www.readbyqxmd.com/read/27529496/curcumin-protects-against-monosodium-glutamate-neurotoxicity-and-decreasing-nmda2b-and-mglur5-expression-in-rat-hippocampus
#20
Rania M Khalil, Naglaa F Khedr
BACKGROUND: Monosodium glutamate (MSG) is a flavor enhancer used in food industries. MSG is well documented to induce neurotoxicity. Curcumin (CUR) reportedly possesses beneficial effects against various neurotoxic insults. Hence, this present study has been designed to evaluate the neuroprotective effect of curcumin on MSG-induced neurotoxicity in rats. METHODS: Thirty-two male Wister rats were divided into four groups (n=8): Control group, MSG group, CUR group and MSG + CUR group...
August 17, 2016: Neuro-Signals
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