Construction of engineered Saccharomyces cerevisiae strain to improve that whole-cell biocatalytic production of melibiose from raffinose

There are excessive by-products in the biocatalysis process of this whole-cell biocatalytic production of melibiose from raffinose with current Saccharomyces cerevisiae strains. To solve this problem, we constructed engineered strains based on a liquor yeast (S. cerevisiae) via gene deletion (mel1 gene), heterologous integration (fsy1 or/and ffzi1 gene from Candida magnoliae), and gene overexpression (gcr1 gene). Functional verification showed that deletion of the mel1 gene led to elimination of the reactions catalyzed by α-galactosidase, as well as elimination of the degradation of melibiose and the formation of galactose by-product. Insertion of the fsy1 or/and ffzi1 gene and overexpression of the gcr1 gene could contribute to fructose transport for enhancing the biopurification rate of the fructose by-product. Compared with the wild-type strain, the optimal engineered strain of MP8 (Δmel1::fsy1 _cm ::ffzi1 _cm ::gcr1 _sc ) had improved about 30% on yield, 31% on productivity, and 36% on purity of the melibiose product.

Effect of Vasantic Vaman and other Panchakarma procedures on disorders of various systems

Kapha is dominant and vitiated in Vasant ritu as it is described in Ayurveda. Acharya Chakrapani has said in chapter six, that not only Vaman, but all the five biopurification methods of the Panchakarma should be practiced in Vasant ritu. Out of the two best seasons in a year for purification, Vasant is better one. This pilot research study was carried out to see the effect of this biopurification process on different disorders. The results were marvelous, as symptomatically 58% relief was achieved.