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A novel process was developed for encapsulation of astaxanthin from Phaffia rhodozyma . The yeast cells were disrupted by glass beads and the high shearing force partially emulsified the astaxanthin in aqueous phase. The enzymolysis method was then adopted to prepare the yeast extract for a full use of the cells. The gelatin and porous starch were used to microencapsulate the emulsified astaxanthin. Under optimized conditions, the recovery of amino nitrogen and solid reached 3.68 ± 0.32% and 49.22 ± 2.34%, respectively. The microencapsulation conditions were optimized through orthogonal experiment and the encapsulation efficiency, loading astaxanthin, and amino-nitrogen reached 88.56%, 1.55 mg/g, and 1.35 ± 0.14%, respectively. The water solubility of microcapsules reached 81.5 ± 0.35%. Color and storage stability analysis showed that microencapsulation of astaxanthin possessed higher thermal stability. The results demonstrated that the established process was effective and practical., Competing Interests: Compliance with ethical standardsThe author declares that they have no conflict of interest.

Conjugated linoleic acid (CLA) isomers, c 9, t 11-CLA and t 10, c 12-CLA, have been proved to exhibit excellent biomedical properties for potential use in anti-cancer applications and in reducing obesity. Acer truncatum Bunge ( ATB ), which is rich in unsaturated fatty acids, including oleic acid, linoleic acid, and nervonic acid, is a new resource for edible oil. In the present study, we developed a new method for producing two CLA isomers from ATB -seed oil by fermentation using Lactobacillus plantarum CGMCC8198 ( LP 8198), a novel probiotics strain. Polymerase chain reaction results showed that there was a conserved linoleate isomerase (LIase) gene in LP 8198, and its transcription could be induced by ATB -seed oil. Analyses by gas chromatography-mass spectrometry showed that the concentration of c 9, t 11-CLA and t 10, c 12-CLA in ATB -seed oil could be increased by about 9- and 2.25-fold, respectively, after being fermented by LP 8198., Competing Interests: Compliance with ethical standardsThe authors declare no conflict of interest.