Results 51 to 60 of about 728 (155)

Structural Characterization of Insoluble Dextran Produced by Leuconostoc mesenteroides NRRL B-1149 in the Presence of Maltose

Food Technology and Biotechnology, 2011
Leuconostoc mesenteroides NRRL B-1149 is known to produce dextran with 52 % α-(1→6) and 40 % α-(1→3) linkages. Low solubility of dextran in water is associated with the presence of high percentage of α-(1→3) linkages.
Arun Goyal, Iskra Ivanova, Ilia Iliev, Veselin Bivolarski, Shraddha Shukla, Rishikesh Shukla   +5 more
doaj  

Bottom‐Up Synthesized Glucan Materials: Opportunities from Applied Biocatalysis

Advanced Materials, Volume 36, Issue 27, July 4, 2024.
Linear d‐glucans, simple yet versatile polysaccharides, shape nanostructures crucial for biomaterial development. Shifting from top‐down to bottom‐up synthesis using natural and engineered enzymes provides meticulous control over polymer structures, fostering diversification for macromolecular materials.
Chao Zhong, Bernd Nidetzky
wiley   +1 more source

Investigating the Potential of Phenolic Compounds and Carbohydrates as Acceptor Substrates for Levansucrase‐Catalyzed Transfructosylation Reaction**

ChemBioChem, Volume 25, Issue 10, May 17, 2024.
Levansucrases from Gluconobacter oxydans, Vibrio natriegens, Novosphingobium aromaticivorans, and Paraburkholderia graminis were used to catalyze the transfructosylation of phenolic compounds and carbohydrates. The selected phenolic acceptor substrates were successfully glycosylated with up to five fructosyl groups transferred from the sucrose donor ...
Muriel Wong Min, Lan Liu, Salwa Karboune
wiley   +1 more source

Effect of addition of wheat bran hydrolysate on bread properties

Journal of Food Science, Volume 89, Issue 5, Page 2567-2580, May 2024.
Abstract Although the addition of bran to bread makes it healthier and more functional, it brings with it some technological problems. One way to eliminate these problems is hydrothermal pretreatment of wheat bran. In this study, five different ratios (10%, 20%, 30%, 50%, and 100%) of hydrolysates from hydrothermal pretreatment of wheat bran (150°C, 30 
Ali Cingöz, Özlem Akpinar, Abdulvahit Sayaslan   +2 more
wiley   +1 more source

Oxidative / Nitrosative Stress ss in Chronic Heart Failure: A Critical Review [PDF]

Türk Biyokimya Dergisi, 2006
Heart failure constitutes a major cardiovascular health hazard worldwide. It afflicts over 1% of the general population and nearly 1 in 10 of the elderly.
Doğan Yücel, Mehmet t Şeneş,, B. Ç . Çiğdem T m Topkaya ya,, Oğuzhan Zengi   +3 more
doaj  

Selective utilization of gluco‐oligosaccharides by lactobacilli: A mechanism study revealing the impact of glycosidic linkages and degree of polymerization on their utilization

Journal of Food Science, Volume 89, Issue 1, Page 523-539, January 2024.
Abstract Gluco‐oligosaccharides (GlcOS) are potential prebiotics that positively modulate beneficial gut commensals like lactobacilli. For the rational design of GlcOS as prebiotics or combined with lactobacilli as synbiotics, it is important to establish the structure requirements of GlcOS and specificity toward lactobacilli.
Meijun Zeng, Jee‐Hwan Oh, Jan‐Peter van Pijkeren, Xuejun Pan   +3 more
wiley   +1 more source

Assessing the Efficacy of Dextran and Dextransucrase in Modulating MCF-7 Breast Cancer Cell Activity

Magazin of Al-Kufa University for Biology
Tumor development is a complex process involving abnormal cell proliferation within an organism. This study aims to understand tumors, their categorization, formation methods, and effects on human health.
Yasameen Hasan Ali, Sahira Nsayef Muslim, Israa Hussein Hamzah   +2 more
doaj   +1 more source

Enzymatic production of glucooligosaccharides using dextransucrases from strains Leuconostoc mesenteroides Lm 22 and Leuconostoc mesenteroides Lm 28 [PDF]

Journal of BioScience and Biotechnology, 2012
Dextransucrases are enzymes that transfer the glucosyl moiety from sucrose to other acceptor molecules. In the present study, we have investigated the biosynthesis of dextransucrases by two strains of Leuconostoc mesenteroides isolated from Bulgarian ...
ILIA ILIEV, TONKA VASILEVA
doaj  

Different Modes of Regulation of the Expression of Dextransucrase in Leuconostoc lactis AV1n and Lactobacillus sakei MN1

Frontiers in Microbiology, 2019
Leuconostoc lactis AV1 strain isolated from a Tunisian avocado was characterized as a dextran producer. The promoter PdsrLL and the dsrLL gene encoding the DsrLL dextransucrase responsible for the dextran synthesis were transcriptionally fused to the ...
Norhane Besrour-Aouam, Norhane Besrour-Aouam, Maria Luz Mohedano, Imene Fhoula, Kenza Zarour, Kenza Zarour, Afef Najjari, Rosa Aznar, Rosa Aznar, Rosa Aznar, Alicia Prieto, Hadda-Imene Ouzari, Paloma López   +12 more
doaj   +1 more source

Studies on Dextransucrase Part I

Journal of the agricultural chemical society of Japan, 1972
(1) Leucanostoc mesenteroides IAM 1046により,デキストランシュクラーゼを生産させるための培地,および培養条件を検討した. (2)上記菌株のデキストランシュクラーゼの部分的精製を行ない,硫安塩析およびDEAE-セルロースによるクロマトグラフィーを期いて,比活性が培養液の24～56倍の精製酵素を得た. (3)部分精製したデキストランシュクラーゼの酵素化学的性質を検討した.その結果,この酵素は作用最適pH 5.0,最適温度30°C, pH 4.0～7.5において安定であるが, 40°C以上にて速やかに失活するなどのことがわかった.またMichaelis恒数は30°C, pH 5.0で1.57×10-2 (M)であった.
Michio NIINOBE, Tsuneo KOBAYASHI
openaire   +2 more sources