The new tussah varieties have been bred by selecting large, high quality and midterm based on the indexes of high cocoon shell rate and high stress re- sistance. In the meantime, whole cocoon weight, hatchabillty and ...The new tussah varieties have been bred by selecting large, high quality and midterm based on the indexes of high cocoon shell rate and high stress re- sistance. In the meantime, whole cocoon weight, hatchabillty and other economic parameters were considered in new variety breeding. Through 14 generations of hybrid breeding for over 7 years, two new tussah varieties had been successfully obtained. The breeding results of DW were as follows ： the 1 000-cocoon weight was 11.57 kg; the whole cocoon weight was 12.06 g; the cocoon shell rate was 12.22% ; and the larval-pupal integrated survival rate was 95.87%. The breeding re- sults of GH were as follows： the 1 000-cocoon weight was 11.52 kg; the whole cocoon weight was 11.95 g; the cocoon shell rate was 12.66% ; and the larval-pupal integrated survival rate was 90.37%.展开更多
Besides excellent biodegradability and biocompatibility,a useful tissue engineering scaffold should provide favorable surface properties,outstanding mechanical strength and controlled drug release property. In this pa...Besides excellent biodegradability and biocompatibility,a useful tissue engineering scaffold should provide favorable surface properties,outstanding mechanical strength and controlled drug release property. In this paper,a mild process to prepare porous tussah silk fibroin( TSF) scaffolds from aqueous solution was described. The n-butanol was used to control the self-assembly of tussah silk. The scaffolds with different TSF concentrations and the same volume showed differences in pore size and distribution. The maximum porosity of the poprepared porous scaffolds was 80% in this paper. And the pore size of the prepared porous scaffolds with different concentrations was between 10μm and 230 μm. X-ray diffraction( XRD) analysis revealed that amorphous TSF was crystallized to β-sheet secondary structure upon gelatin. The TSF scaffolds for controlled drug release was studied and the result showed that the time of drug release was significantly longer. The produced TSF scaffolds with sustained drug release have potential application in tissue engineering.展开更多
The new tussah variety " Gaoyou 1" adopted " Kangda" as the basic material,used the method of systematic breeding,and adopted the method of regional feeding,systematic separation and directional cu...The new tussah variety " Gaoyou 1" adopted " Kangda" as the basic material,used the method of systematic breeding,and adopted the method of regional feeding,systematic separation and directional cultivation. At the same time,taking into account the comprehensive balance of various economic indicators,through 8 years and 16 generations of systematic breeding,a new tussah variety with high fat content was bred. The breeding results showed that the whole cocoon weight was 12. 3 g,the thousand-cocoon weight was 11. 8 kg,the cocoon filament length was 1 222 m,the hundred-cocoon fiber weight was 125. 6 g,the cocoon filament size was 6. 21 D,the raw silk percentage of fresh cocoon was 8. 48%,the unified viability of pupae was 93. 2%,the oil content of single moth was 0. 55 g and the oil content was 56. 17%.展开更多
In this paper, study objects are raw and dilative tussah silk. By means of measuring and analyzing the fiber's diameter, linear density, diameter coefficient, thickness and fullness, this paper focuses on the infl...In this paper, study objects are raw and dilative tussah silk. By means of measuring and analyzing the fiber's diameter, linear density, diameter coefficient, thickness and fullness, this paper focuses on the influence of dilative technology on tussah silk's fiber and fabric. The results include the following three aspects: the diameter coefficient of dilative tussah silk fiber is increased by 10.35%, dilative tussah heather silk is thicker and fabric fullness is improved by 9%.展开更多
The tawny cocoon of tussah has been studied by means of UV, FS and ESR. It has been shown that the tawny chromogen is a cross-linked polymer of gentisic acid and silk proteins. The formation mechanism of this polymer ...The tawny cocoon of tussah has been studied by means of UV, FS and ESR. It has been shown that the tawny chromogen is a cross-linked polymer of gentisic acid and silk proteins. The formation mechanism of this polymer is also suggested here.展开更多
基金Supported by China Agricultural Industry Research System(CARS-22)Science and Technology Project of Jilin City(201122303)
文摘The new tussah varieties have been bred by selecting large, high quality and midterm based on the indexes of high cocoon shell rate and high stress re- sistance. In the meantime, whole cocoon weight, hatchabillty and other economic parameters were considered in new variety breeding. Through 14 generations of hybrid breeding for over 7 years, two new tussah varieties had been successfully obtained. The breeding results of DW were as follows ： the 1 000-cocoon weight was 11.57 kg; the whole cocoon weight was 12.06 g; the cocoon shell rate was 12.22% ; and the larval-pupal integrated survival rate was 95.87%. The breeding re- sults of GH were as follows： the 1 000-cocoon weight was 11.52 kg; the whole cocoon weight was 11.95 g; the cocoon shell rate was 12.66% ; and the larval-pupal integrated survival rate was 90.37%.
基金Collaborative Innovation Center of Textile and Garment Industry of Henan Province,China(No.hnfz14004)
文摘Besides excellent biodegradability and biocompatibility,a useful tissue engineering scaffold should provide favorable surface properties,outstanding mechanical strength and controlled drug release property. In this paper,a mild process to prepare porous tussah silk fibroin( TSF) scaffolds from aqueous solution was described. The n-butanol was used to control the self-assembly of tussah silk. The scaffolds with different TSF concentrations and the same volume showed differences in pore size and distribution. The maximum porosity of the poprepared porous scaffolds was 80% in this paper. And the pore size of the prepared porous scaffolds with different concentrations was between 10μm and 230 μm. X-ray diffraction( XRD) analysis revealed that amorphous TSF was crystallized to β-sheet secondary structure upon gelatin. The TSF scaffolds for controlled drug release was studied and the result showed that the time of drug release was significantly longer. The produced TSF scaffolds with sustained drug release have potential application in tissue engineering.
基金Supported by Special Project of China Agriculture Research System (No.CARS-18)Jilin Provincial Science and Technology Guidance Plan Task (20120812)
文摘The new tussah variety " Gaoyou 1" adopted " Kangda" as the basic material,used the method of systematic breeding,and adopted the method of regional feeding,systematic separation and directional cultivation. At the same time,taking into account the comprehensive balance of various economic indicators,through 8 years and 16 generations of systematic breeding,a new tussah variety with high fat content was bred. The breeding results showed that the whole cocoon weight was 12. 3 g,the thousand-cocoon weight was 11. 8 kg,the cocoon filament length was 1 222 m,the hundred-cocoon fiber weight was 125. 6 g,the cocoon filament size was 6. 21 D,the raw silk percentage of fresh cocoon was 8. 48%,the unified viability of pupae was 93. 2%,the oil content of single moth was 0. 55 g and the oil content was 56. 17%.
文摘In this paper, study objects are raw and dilative tussah silk. By means of measuring and analyzing the fiber's diameter, linear density, diameter coefficient, thickness and fullness, this paper focuses on the influence of dilative technology on tussah silk's fiber and fabric. The results include the following three aspects: the diameter coefficient of dilative tussah silk fiber is increased by 10.35%, dilative tussah heather silk is thicker and fabric fullness is improved by 9%.
基金Project supported by the National Natural Science Foundation of China.
文摘The tawny cocoon of tussah has been studied by means of UV, FS and ESR. It has been shown that the tawny chromogen is a cross-linked polymer of gentisic acid and silk proteins. The formation mechanism of this polymer is also suggested here.
