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In recent years, bacterial cellulose material has been considered as a potential biotechnological product for biomedical applications. Previous studies described some special properties of bacterial cellulose, such as water holding capacity, high polymerization, high crystallization, high purity, and strength. In this study, bacterial cellulose ...
7 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 517 | Lượt tải: 0
The suspension solution containing 10% water-insoluble β-glucan extracted from yeast cell wall was irradiated by gamma rays from a Co-60 source for degradation. The water-soluble β-glucan products with molecular weight (Mw) of about 30.5, 24.9 and 10.8 kDa were successfully prepared from the samples irradiated at the doses of 100, 200 and 300 kG...
8 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 553 | Lượt tải: 0
SUMMARY Promoter is a sequence located at the 5’ end upstream of the gene, that plays a key role in gene expression. In tomato, the E8 gene is highly expressed during fruit ripening, and is controlled by E8 promoter. E8 promoter includes the cis-acting elements responding to ethylene or receiving independent signals of ethylene for fruit ripeni...
7 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 596 | Lượt tải: 0
Childhood nephrotic syndrome is a serious disease with the high risk of mortality. The prevalence worldwide is approximately 2 to 7 cases per 100,000 children. Hitherto, the patients are treatmed with steroid or immunosuppressive therapy and renal transplantation. However, many patients are steroid resistant and have a high risk of recurrence. T...
12 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 483 | Lượt tải: 0
SUMMARY Cystatin is the protein inhibitor of cysteine proteinase activity, it roles as a substrate into the active center of cysteine proteinase, that prevents the other substrate proteins go into. In this report, we present the results of isolation, cloning and determination of the cystatin II gene sequence of four local maize samples (SL, LC1,...
8 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 514 | Lượt tải: 0
Như vậy, As đã ảnh hưởng đến tỷ lệ nở của phôi. Với lượng tích tụ As càng lớn, tỷ lệ nở của phôi càng giảm. Nguyên nhân có thể là do: (1) As khi tích lũy bên trong phôi làm giảm hoạt động quẫy mình, từ đó làm giảm những tác động từ bên trong phôi, kết quả làm giảm tốc độ và tỷ lệ nở của phôi; (2) Phôi cá ngựa vằn khi bị phơi nhiễm As gây ra ...
11 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 593 | Lượt tải: 0
SUMMARY Diet is one of the important factors having strong effects on growth rate, survival rate and rearing efficiency of many fish species in general and Russian sturgeon in particular. In this study, three different diets (CT1-Artemia and processed; CT2-Lansy and Skerting; CT3-Artemia, Lansy and Tubifex worm) were experimented in order to id...
6 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 522 | Lượt tải: 0
SUMMARY The Shrunken 2 (Sh2) gene was proved to be involved in starch biosynthesis as it codes for two large subunits of ADP-glucose pyrophosphorylase - an enzyme that plays an important role in regulating starch biosynthesis in cereal crops. The aim of this study was to transfer Sh2 gene into some inbred maize lines and regenerate transgenic m...
11 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 512 | Lượt tải: 0
Of the five gene regions, the highest level of nucleotide diversity was shown in the trnHpsbA region (from 0.000 to 3.552 %), while the lowest was in the rpoC1 region (from 0.000 to 0.177 %). The matK gene is the most conservative (671 nucleotides) and the trnH-psbA gene region is the least (78 nucleotides). The capability to distinguish species ...
17 trang | Chia sẻ: yendt2356 | Ngày: 30/11/2020 | Lượt xem: 478 | Lượt tải: 0
SUMMARY The products EB containing of eleutherine and isoeleutherine have been extracted from the rhizome of Eleutherine bulbosa and showed the antibacterial effect on experimental animals. Based on the results of diameter of sterile ring using the agar diffusion method, EB products have a significant antibacterial effect against Bacillus subti...
7 trang | Chia sẻ: thucuc2301 | Ngày: 30/11/2020 | Lượt xem: 672 | Lượt tải: 0