In the current study, a novel wool dissolving system based on NaHSO3, azone and LKZ-610 (Trisubstituted organic phosphorus, an anti-shrink finishing agent for wool and cashmere) was prepared and employed to process wool fibers into keratin solution at 90°C for 7 hrs, where 65g wool fibers, 30g NaHSO3 and 5g azone were dissolved in 1L LKZ-610, resulting in high molecular weight keratin solution. The anti-pilling rating reached at Grade 4.5 with good hand when the cashmere fabric was treated for 50min at 50°C in the previously prepared wool keratin solution under the condition of 1:20 bath ratio, 8% owf keratin solution and 5% owf LKZ-610.

A novel enzymatic processing with the characteristic of applying protease and a proposed activator simultaneously was suggested in the present study for the purpose of producing high quality wool top. Experiments results showed there existed a synergistic effect between the protease and its activator on restricting enzyme hydrolyzing function on the outer layer of wool fiber and removing scale effectively, compared with using protease and activator separately. It was observed that 75%-80% content of activator was consumed while almost no enzyme consumed in the integrative enzyme catalysis system. Furthermore, after the proposed protease treatment, relative test showed the felting ball density decreased by 50% and averaged fiber diameter decreased by 1.393μm, with the tension retention more than 80%, and elongation at break maintaining more than 73% in comparison with the untreated one, implying desired slenderization and improvement of felting behavior of wool fiber

In the current work, the objective of shrinkproof wool was rapidly achieved via the synergetic effect between a protease and its bioenzyme activator, dramatically increasing the reaction rate of protease to wool cuticles. Optimal shrinkproof effect was obtained after the wool fiber sample was processed in the enzymatic solution for 3min at 50°C under the optimized treating condition, i.e, the concentrations of protease and enzyme activator were 1.3g/L and 2.5g/L respectively, with the wet pickup ratio of 130%, the resultant wool sample maintained 82% and 80% of its control sample in terms of tenacity and extension @ break, respectively, which meets the requirements for subsequent processing and applications. Further large-scale protease treatment to wool yarns was performed and the test result for shrinkage rate was-3.01% based on the shrinkproof standard test method of IWS TM31(5A×5), indicating satisfactory wool shrinkproof effect at rapid processing rate (7m/min).

.In this study, the nutrient components of the wild and the liquid suspension cultured Nostoc flagelliforme were determined and compared by atomic absorption method, HPLC and so on. The results indicated that the contents of crude proteins, crude fat, β-carotenes, vitamin C and mineral elements in N. flagelliforme cells from the suspension culture were higher than those in wild ones. 17 kinds of amino acids have been measured and the data showed that the contents of 13 kinds of them in cultured cells were higher than those in wild ones except aspartic acid, valine, isoleucine and arginine. Antitumor effect of the extracellular polysaccharides indicated that the extracellular polysaccharides could inhibit the growth of cervical carcinoma Hela cells. Their inhibition rates are 32.22% and 37.32%, respectively. This investigation showed that the liquid suspension cultivated N. flagellifome can be a substitute for the wild algae to be used as functional food resource.