Abstract Bacterial cis -epoxysuccinic acid hydrolases (CESHs) are intracellular enzymes used in the industrial production of enantiomeric tartaric acids. The mainly as whole-cell catalysts because low stability purified CESHs. However, cell permeability is major drawback catalyst. To overcome this problem, we developed using various surface display systems for CESH[L] which produces L(+)-tartar...

The combination of citric acid-tartaric acid and sodium bicarbonate in effervescent granules has an important role providing effect. Citric tartaric are organic acids that can react with when they come contact water. This reaction results the release carbon dioxide gas, which a splitting effect makes dissolve rapidly Research on formulation evaluation andaliman fruit ethanol extract aims to opt...

An organic nonlinear optical single crystal of L-tartaric acid-nicotinamide (LTN) has been grown by slow evaporation of the saturated solution at constant temperature of 45 C. The grown crystal is subjected to single crystal X-ray diffraction analysis to identify the space group and unit cell parameters. The crystalline quality of LTN has been investigated by high-resolution X-ray diffractometr...

UV/TiO2 photocatalysis of chelated copper in aqueous solutions has been performed starting from Cu(II)-tartaric acid, Cu(II)-citric acid, Cu(II)-EDTA and Cu(II)-DTPA,in the presence of oxygen and at acidic pH. The photocatalytic reaction obeys first-order kinetic equation. The influence of Cu(II) on photocatalytic oxidation of organic ligands and how the various organics will affe...

The potential role of a new energy efficient fermentation technology has been receiving growing attention in past 4 decades. Carboxylic acids such as propionic acid, lactic acid, citric acid, tartaric acid, itaconic acid, butyric acid and nicotinic acid etc. have been used as the most efficient fermentation chemicals. This paper presents a state-of-art review on the development of the separatio...

Perilla frutescens is an annual herb of the mint family native to East Asia. Polyphenols present in perilla have various structural varieties with large diversity of biological activities. It is direct influence the quality of perilla plant and their potential functions. Some of these products have been studied and proven to be effective source of phenolic antioxidants. The aqueous extract cont...

Two series of lanthanide-containing metal–organic frameworks (Ln-MOFs) the general formula {[Ln(HIDA)2H2O]ClO4·H2O}n (Ln = La (1), Nd (2), Eu (3), Gd (4), Tb (5), Eu:Tb (6); H2IDA iminodiacetic acid) and [Ln(TT) (HTT) (H2O)3]n (7), (8), (9), Dy (10), (11); H2TT tartaric were synthesized by reacting Ln(ClO4)3 with acid L-tartaric acid, respectively. All compounds structurally characterized singl...

Carboxylic acids are Brønsted-Lowry acids, they are proton donors. They are the most common type of organic acid. Among the simplest examples are the formic acid H-COOH, that occurs in ants, and acetic acid H3C-COOH group, that gives vinegar its sour taste. Acids with two or more carboxyl groups are called dicarboxylic, tricarboxylic, etc. The simplest dicarboxylic example is oxalic acid (COOH)...