Several microorganisms including Pseudomonas fluorescens, Ps. putida, -Bacillus megaterium, Acinetobacter lwofii, Klebsiella oxytoca, 5. pneumoniae, Serratia rubidaea and Bulleromyces albus were selected for the ability to assimilate specifically L-malic acid. D-Malic acid with high optical purity (
Determination of synthetic malic acid in fruit products
โ Scribed by J.S.H.
- Publisher
- Elsevier Science
- Year
- 1933
- Tongue
- English
- Weight
- 43 KB
- Volume
- 216
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
โฆ Synopsis
have devised the following method for the detection and quantitative determination of added synthetic malic acid in fruits and fruit products. The total malic acid content is first isolated. Determination is then made of (a) total malic acid content by oxidation with potassium permanganate in alkaline solution, and (b) laevo malic acid content by the optical method. The synthetic, racemic malic acid content is then obtained by difference.
๐ SIMILAR VOLUMES
In 1932, EacnrwE 1 developed a fluorirnctric qualitative test for malic acid based upon its reaction with P-naphthol in concentrated sulfuric acid. LErNIscEn AND KATZ2 later reported a quantitative method for rnalic acid based upon this fluorescence which eliminated the interference of citric acid f