Potential of Dipicolinic Acid as a Water-Dissociating Catalyst in a Bipolar Membrane

2021 ◽  
Author(s):  
Bhuvanesh Eswaraswamy ◽  
Priyabrata Mandal ◽  
Priya Goel ◽  
Sujay Chattopadhyay
Keyword(s):  
Dipicolinic Acid ◽  
Bipolar Membrane

QSAR Analysis for Antioxidant Activity of Dipicolinic Acid Derivatives

2018 ◽  
Vol 21 (3) ◽  
pp. 204-214 ◽  
Author(s):  
Vesna Rastija ◽  
Maja Molnar ◽  
Tena Siladi ◽  
Vijay Hariram Masand
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Dipicolinic Acid ◽  
External Validation ◽  
Qsar Model ◽  
Internal Validation ◽  
Qsar Analysis ◽  
Dragon Descriptors ◽  
Qsar Models ◽  
New Compounds

Aims and Objectives: The aim of this study was to derive robust and reliable QSAR models for clarification and prediction of antioxidant activity of 43 heterocyclic and Schiff bases dipicolinic acid derivatives. According to the best obtained QSAR model, structures of new compounds with possible great activities should be proposed. Methods: Molecular descriptors were calculated by DRAGON and ADMEWORKS from optimized molecular structure and two algorithms were used for creating the training and test sets in both set of descriptors. Regression analysis and validation of models were performed using QSARINS. Results: The model with best internal validation result was obtained by DRAGON descriptors (MATS4m, EEig03d, BELm4, Mor10p), split by ranking method (R2 = 0.805; R2 ext = 0.833; F = 30.914). The model with best external validation result was obtained by ADMEWORKS descriptors (NDB, MATS5p, MDEN33, TPSA), split by random method (R2 = 0.692; R2 ext = 0.848; F = 16.818). Conclusion: Important structural requirements for great antioxidant activity are: low number of double bonds in molecules; absence of tertial nitrogen atoms; higher number of hydrogen bond donors; enhanced molecular polarity; and symmetrical moiety. Two new compounds with potentially great antioxidant activities were proposed.

Gold nanocluster-europium(III) ratiometric fluorescence assay for dipicolinic acid

2021 ◽  
Vol 188 (1) ◽  
Author(s):  
Xiaoqing Li ◽  
Junjun Luo ◽  
Xingxing Jiang ◽  
Minghui Yang ◽  
Avraham Rasooly
Keyword(s):  
Dipicolinic Acid ◽  
Fluorescence Assay ◽  
Ratiometric Fluorescence ◽  
Gold Nanocluster

scholarly journals Biosynthesis of Dipicolinic Acid in Sporulating Bacillus megaterium

1966 ◽  
Vol 241 (19) ◽  
pp. 4563-4564
Author(s):  
Marilyn L. Bach ◽  
Charles Gilvarg
Keyword(s):  
Bacillus Megaterium ◽  
Dipicolinic Acid

scholarly journals Molecular Physiological Characterization of a High Heat Resistant Spore Forming Bacillus subtilis Food Isolate

2021 ◽  
Vol 9 (3) ◽  
pp. 667
Author(s):  
Zhiwei Tu ◽  
Peter Setlow ◽  
Stanley Brul ◽  
Gertjan Kramer
Keyword(s):  
Bacillus Subtilis ◽  
Heat Resistance ◽  
Dipicolinic Acid ◽  
Laboratory Strain ◽  
High Heat ◽  
High Heat Resistance ◽  
Vegetative Cells ◽  
Heat Resistant ◽  
Food Isolate ◽  
Wet Heat

Bacterial endospores (spores) are among the most resistant living forms on earth. Spores of Bacillus subtilis A163 show extremely high resistance to wet heat compared to spores of laboratory strains. In this study, we found that spores of B. subtilis A163 were indeed very wet heat resistant and released dipicolinic acid (DPA) very slowly during heat treatment. We also determined the proteome of vegetative cells and spores of B. subtilis A163 and the differences in these proteomes from those of the laboratory strain PY79, spores of which are much less heat resistant. This proteomic characterization identified 2011 proteins in spores and 1901 proteins in vegetative cells of B. subtilis A163. Surprisingly, spore morphogenic protein SpoVM had no homologs in B. subtilis A163. Comparing protein expression between these two strains uncovered 108 proteins that were differentially present in spores and 93 proteins differentially present in cells. In addition, five of the seven proteins on an operon in strain A163, which is thought to be primarily responsible for this strain’s spores high heat resistance, were also identified. These findings reveal proteomic differences of the two strains exhibiting different resistance to heat and form a basis for further mechanistic analysis of the high heat resistance of B. subtilis A163 spores.

Application of bipolar membrane electrodialysis (BMED) for simultaneous separation and recovery of boron and lithium from aqueous solutions

Desalination ◽  
2017 ◽  
Vol 424 ◽  
pp. 37-44 ◽  
Author(s):  
Samuel Bunani ◽  
Kazuharu Yoshizuka ◽  
Syouhei Nishihama ◽  
Müşerref Arda ◽  
Nalan Kabay
Keyword(s):  
Aqueous Solutions ◽  
Bipolar Membrane ◽  
Bipolar Membrane Electrodialysis ◽  
Simultaneous Separation
Sign in / Sign up

Export Citation Format

Share Document