Selection of indigenous strains (paecilomyces lilacinus) parasitize Meloidogyne spp. isolated from Ba Ria – Vung Tau provinceThe time of 8 strains will be infected on egg masses longer than female nematode (Table 5). Egg mass comprised of many eggs which were captured by gelatinous masses with a glycoprotein matrix (produced by rectal glands in the female, keeping the eggs together and protecting them against environmental extremes and predation). In addition to provi...
9 trang | Chia sẻ: yendt2356 | Ngày: 01/12/2020 | Lượt xem: 455 | Lượt tải: 0
Tinh sạch và đánh giá hoạt tính kháng khuẩn của sắc tố đỏ prodigiosin từ serratia marcescens - Nguyễn Sỹ Lê ThanhSUMMARY Prodigiosin (Pg) is a secondary metabolite alkaloid with anti cancer, immunosuppressive, antifungal properties. Pg is a red pigment, which isolated from bacteria, such as Serratia marcescens, Hahella chejuensis, Vibrio psychroerythrus and Streptomyces coelicolor. In present study, we focus on selection of culture medium for effective pig...
7 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 515 | Lượt tải: 0
Sàng lọc và phân tích bản chất hóa học của các hoạt chất kháng nấm từ xạ khuẩn - Trần Thị Đức PhươngSUMMARY Fungal infections are a serious problem in agriculture, health and food preservation industry. The chemically synthesized compounds are able to inhibit fungi in a certain degree. However, these compounds have a lot of disadvantages such as lack of specificity and can accumulate in the environment, some compounds are even harmful to human...
8 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 555 | Lượt tải: 0
Rhodosporidium sp. growth in molasses medium and extraction of its astaxanthin by using HCLIn this research, the results show that astaxanthin content of Rhodosporidium sp. 1.3 times as lower as wild yeast Phaffia rhodozyma ATTCC2402 was fermented to produce 303.3 μg/g of astaxanthin content [18] (Figures 13 and 14, Table 2). In the experiment of Tong and Tran [19], yeast Phaffia rhodozyma NT5 was grown in liquid culture containing sa...
11 trang | Chia sẻ: yendt2356 | Ngày: 01/12/2020 | Lượt xem: 587 | Lượt tải: 0
Tạo dòng nấm men saccharomyces cerevisiae mang dung hợp gen nhằm biểu hiện reutericin trên bề mặt tế bào - Nguyễn Hiếu NghĩaSUMMARY Reutericin is group IIc bacteriocin, heat-labile bacteriocin which is produced by Lactobacillus reuteri LA6 and applied in many food industries. The seminarians bacteriocin derived naturally in low levels. Therefore, several different researches have been carried out in order to increase Reutericin expression level by recombinant techniq...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 564 | Lượt tải: 0
Nghiên cứu tác động của dmso trong biệt hóa tạo tế bào giống tế bào gan từ gốc cuống rốn - Nguyễn Văn HạnhSUMMARY Recent studies indicated that DMSO can induce differentiation of mesenchymal stem cells derived from bone marrow, adipose tissue, umbilical cord blood, umbilical cord tissues into hepatocyte-like cells. However, the effect of DMSO is not similar in reports. In this study, umbilical cord cells were isolated and analyzed the expression of ...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 552 | Lượt tải: 0
Arbuscular micorrhizal fungi association in two coffee farms with different cultivation at Lam DongBased on the colors and morphology, there are 48 types of spore in G1, 71 types in G2. There are several types of spores appeared in both farms such as RE7, W6, W1, Y5. There are many types of spores only appear in G2, mainly belong to Glomus. Some spore types appear with high density in each farm (1-4 spores / g soil): B7, RE10 in farm G1; Yc,...
7 trang | Chia sẻ: yendt2356 | Ngày: 01/12/2020 | Lượt xem: 507 | Lượt tải: 0
Nuôi cấy mô lá đinh lăng (Polyscias fruticosa L. harms) tạo rễ tơ và định lượng hoạt chất saponin tích lũy - Nguyễn Trung Hậu1SUMMARY Polyscias fruticosa (L.) Harms is the medicinal plant, popularly cultivated in south-east asia and using as functional-foods. Besides of plantlets micropropagation for area development, hairy-root culture was the techniques manipulated for saponin accumulation. The leaves of young Dinh lang 1-year trees were used as culture materials. St...
6 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 547 | Lượt tải: 0
Study of some parameters responsible for glyphosate herbicide mineralization by Electro - Fenton processThe decontamination of aqueous glyphosate solutions was firstly carried out by electroFenton process using graphite-felt cathode and Fe2+ as the catalyst. The obtained results demonstrated that pH, electrolysis time, current intensity and Fe2+ catalyst concentration influenced the glyphosate mineralization efficiency. Under the optimal conditions...
7 trang | Chia sẻ: yendt2356 | Ngày: 01/12/2020 | Lượt xem: 475 | Lượt tải: 0
Định danh và nghiên cứu một số yếu tố ảnh hưởng lên khả năng sinh tổng hợp protease ngoại bào của bacillus subtilis DC5 - Đỗ Thị Bích ThủySUMMARY The strain Bacilus subtilis DC5 having high productivity of extracellular amylase and protease was determined as based on its 16S rDNA gene sequence. Cultivating strain B. subtilis DC5 in optimum basic medium supplemented with soluble starch or yeast extract increased protease productivity (0.423 HP/ml and 0.528 HP/ml, respectively). How...
7 trang | Chia sẻ: thucuc2301 | Ngày: 01/12/2020 | Lượt xem: 616 | Lượt tải: 0
