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The complete chloroplast genome of purple longan (Dimocarpus longan Lour., Sapindaceae)
Pham Anh Thi Nguyen,Tan Khang Do,Thi Pha Nguyen,Van Be Nam Tran,Hoang Dang Khoa Do 국립중앙과학관 2024 Journal of Asia-Pacific Biodiversity Vol.17 No.1
Purple longan (Dimocarpus longan Lour.) is a new longan cultivar that arose in Soc Trang province,Vietnam. Although the economic value of purple longan has been revealed, genomic data have not beenexplored. In this study, the complete chloroplast genome of purple longan was sequenced and charac terized, which was 160,763 bp in length. The genome had a quadripartite structure, including a largesingle copy (85,628 bp), a small single copy (18,247 bp), and two inverted repeat (28,444 bp) regions. This genome contained 79 protein-coding genes, 30 transfer RNAs, and four ribosomal RNAs, of which, 16genes were duplicated in inverted repeat regions. Comparative genomic analysis revealed 11 highlyvariable regions (including matK-trnK_UUU, psbK-trnG_UCC, atpH-atpI, psbZ-rps14, pafI-trnL_UAA, psbJ petG, clpP, rpl36-rpl14, rpl32-ccsA, rps15-ycf1, and ycf1). Additionally, 100 insertion and deletion sites wereidentified in the purple longan chloroplast genome. This study provided the first report on the completechloroplast genome of purple longan, which is useful for further studies on cultivar identification,germplasm conservation, and plant breeding in the Dimocarpus genus and Sapindaceae family.
Evaluation of physicochemical and biological properties of python fat (Python bivittatus)
Pham Thi Quyen,Le Pham Tan Quoc 한국식품저장유통학회 2023 한국식품저장유통학회지 Vol.30 No.5
The main aim of this study was to determine python fat’s several physicochemical properties, including dimensions, color, structure, acid value (AV), saponification value (SV), density, and recovery efficiency. The optimum yield obtained was approximately 80.40% at 180℃ for 60 min with an AV of 0.3366 and SV of 179.56 mg KOH/g. Fatty acids, comprising oleic acid (72.462%), palmitic acid (26.243%), linolenic acid (0.835%), and myristic acid (0.459%), were identified using gas chromatography-mass spectrometry (GC-MS). The python fat had a very weak antioxidant capacity and almost no antibacterial ability with gram-positive (Staphylococcus aureus - ATCC 25923 and Bacillus cereus - ATCC 10876) and gram- negative (Escherichia coli - ATCC 25922 and Salmonella enterica - ATCC 35664) bacteria (used the paper disc diffusion method for antibiotic susceptibility testing). Moreover, python fat is considered to be very resistant to high temperatures.
An overview bioactive compounds on the skin of frogs (Anura)
Tran Thi Huyen,Phan Thi Hoang Anh,Nguyen Thi Anh Hong,Nguyen Ngoc Duyen,Le Pham Tan Quoc,Tran Dinh Thang 한국수산과학회 2023 Fisheries and Aquatic Sciences Vol.26 No.4
The robust development of frog farming offered high economic benefits but created a large waste residue of frog bones and skin that received little attention. Over the years, inedible by-products have often been processed into biomolecules of potential value and environmental benefits, such as collagen, gelatin, and bioactive peptides. An overview of bioactive compounds on frog skins from various countries indicated that brevinin was the most abundant biological peptide found in frog skin. Other remaining compounds also possessed their highlighted activities, including antibacterial, stimulating insulin release and gastric hormone release, anti-cancer, and neuroregulatory. Notably, various components have been analyzed in the structure and sequence to give meaningful insight into clustering components related to their biological activity. This review may create a source of raw materials for the developmental research of by-products from frog skin and concomitantly reduce environmental pollution.
Han Thi Vo,Tien Duc Dao,Tuyen Van Duong,Tan Thanh Nguyen,Binh Nhu Do,Tinh Xuan Do,Khue Minh Pham,Vinh Hai Vu,Linh Van Pham,Lien Thi Hong Nguyen,Lan Thi Huong Le,Hoang Cong Nguyen,Nga Hoang Dang,Trung 질병관리청 2024 Osong Public Health and Research Persptectives Vol.15 No.1
Objectives: The incidence of posttraumatic stress disorder (PTSD) has increased, particularly among individuals who have recovered from coronavirus disease 2019 (COVID-19) infection. Health literacy is considered a “social vaccine” that helps people respond effectively to the pandemic. We aimed to investigate the association between long COVID-19 and PTSD, and to examine the modifying role of health literacy in this association.Methods: A cross-sectional study was conducted at 18 hospitals and health centers in Vietnam from December 2021 to October 2022. We recruited 4,463 individuals who had recovered from COVID-19 infection for at least 4 weeks. Participants provided information about their sociodemographics, clinical parameters, health-related behaviors, health literacy (using the 12-item short-form health literacy scale), long COVID-19 symptoms and PTSD (Impact Event Scale-Revised score of 33 or higher). Logistic regression models were used to examine associations and interactions.Results: Out of the study sample, 55.9% had long COVID-19 symptoms, and 49.6% had PTSD. Individuals with long COVID-19 symptoms had a higher likelihood of PTSD (odds ratio [OR], 1.68; 95% confidence interval [CI], 1.63–2.12; p<0.001). Higher health literacy was associated with a lower likelihood of PTSD (OR, 0.98; 95% CI, 0.97–0.99; p=0.001). Compared to those with long COVID-19 symptoms and the lowest health literacy score, those with long COVID-19 symptoms and a 1-point health literacy increment had a 3% lower likelihood of PTSD (OR, 0.97; 95% CI, 0.96–0.99; p=0.001).Conclusion: Health literacy was found to be a protective factor against PTSD and modified the negative impact of long COVID-19 symptoms on PTSD.
Chi Thi Pham,Binh Tan Nguyen,Minh Tuyet Nguyen,ThuHien Nguyen,Cuong Ngoc Hoang,Nguyen Ngan Nguyen,이평찬,김진환,DongQuy Hoang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.93 No.-
The behavior of rPUf (polyurethane foam derived from bis(2-hydroxyethyl) terephthalate (BHET)recovered from post-consumer poly(ethylene terephthalate)-PET bottles) and cPUf (polyurethane foambased on a commercial polyol) were evaluated by comprehensive characterizations, and their thermalstabilities,flammabilities, and physical properties were compared. Without using aflame retardant, rPUfpassed the UL-94HB standard, whereas cPUf burned rapidly to the holding clamp. Various formulationsof rPUf and cPUf with established eco-friendlyfire retardants (FRs), including triphenyl phosphate,aluminum diethylphosphinate, and aluminum trihydroxide, exhibited notably higherfire resistance. Thedifferences between the experimental and calculated densities showed the effectiveness of the foamingprocess. A larger difference indicated that the FR improved the foaming process more. The BHET structurecontains an aromatic moiety that strongly enhanced the compressive strength and protected the rPUf/FRsfrom biodegradation, as evidenced by sorption isotherm experiments. For that reason, the rPUf/FRs couldbe used as building materials, especially under high humidity conditions. These are the advantages ofBHET over the commercial polyol for PUf preparation. Chemical recycle of post-consumer PET bottles toproduce high performance PUf could be applied on an industrial scale and then it creates the sustainablerecycling industry.
Tran Thi Phuong Nhung,Le Pham Tan Quoc (사)한국식물생명공학회 2024 JOURNAL OF PLANT BIOTECHNOLOGY Vol.51 No.2
This study explores the insecticidal efficacy of ethanol extracts - obtained from the fruits and seeds of Melia azedarach (MAFS) - against Bactrocera cucurbitae. We assessed the effectiveness of the MAFS extracts at concentrations ranging from 1 to 625 ppm using both laboratory and greenhouse models. Sofri protein 10 DD (1.2 liters/ha) served as the standard insecticide, while water functioned as the negative control. Key parameters evaluated include pupation period, germination time, quantities of pupae and adult individuals, and the severity of damage to bitter melon fruits. In the laboratory model, MAFS significantly prolonged the pupation period (p < 0.05), reduced pupal numbers (p < 0.05), and affected the pupation percentage of B. cucurbitae (p < 0.05). In addition, the germination time (p < 0.05) and proportion of adult B. cucurbitae emergence (p < 0.05) were also significantly impacted. In the greenhouse experiment, MAFS significantly reduced the quantity of B. cucurbitae eggs on bitter melon plants (p < 0.05), resulting in a notable decrease in both larval (p < 0.05) and pupal quantities (p < 0.05). The inhibitory effects of MAFS on larval (p < 0.05) and pupal quantities (p < 0.05), as well as survival from the larval to adult stage, were equivalent to the sofri protein (p < 0.05). MAFS effectively mitigated the severity of damage to bitter melon fruits caused by B. cucurbitae (p < 0.05). Moreover, MAFS exhibits significant effects throughout the various developmental stages of B. cucurbitae. These findings support the potential of MAFS ethanol extracts as an efficient and eco-friendly solution for pest infestation management.
Tran Thi Huyen,Ha Phuong Trang,Nguyen Thi-Ngan,Bui Dinh-Thanh,Le Pham Tan Quoc,Trinh Ngoc Nam 한국수산과학회 2023 Fisheries and Aquatic Sciences Vol.26 No.3
The thermolabile haemolysin (tlh) of Vibrio parahaemolyticus (Vptlh) from V. parahaemolyticus is a multiple-function enzyme, initially describes as a haemolytic factor activated by lecithin and phospholipase A2 enzymatic activity (Shinoda, 1991; Vazquez-Morado, 2021; Yanagase et al., 1970). Until now, the tlh structure has hypothesized including N-terminal and C-terminal domain, but what domain of the Vptlh structure does the haemolytic activity has not been refined yet. In this study, a 450-bp VpTLH nucleotide sequence of the entire Vptlh gene encoded the C-terminal domain cloned firstly to examine its responsibility in the activity of the Vptlh. The C-terminal domain fused with a 6-His-tag named the His-tag-VpC-terminal domain was expressed successfully in soluble form in the BL21 (DE3) PlysS cell. Remarkably, both expression and purification results confirmed a high agreement in the molecular weight of the His-tag-VpC-terminal domain was 47 kDa. This work showed the His-tag-VpC-terminal domain lysed the erythrocyte membranes in the blood agar and the phosphate buffered saline (0.9%) media without adding the lecithin substrate of the phospholipase enzyme. Haemolysis occurred at all tested diluted concentrations of His-tag-VpC-terminal domain (p < 0.05), providing evidence for the independent haemolytic activity of the His-tag-VpC-terminal domain. The content of 100 μg of the His-tag-VpC-terminal domain brought the highest haemolytic activity of 80% compared to that in the three remaining contents. Significantly, the His-tag-VpC-terminal domain demonstrated not to involve the phospholipase activity in Luria-Bertani agar supplemented with 1% (vol/vol) egg yolk emulsion. All results proved the vital responsibility of the His-tag-VpC-terminal domain in causing the haemolytic activity without the required activation by the phospholipase enzyme. Raw extracts of Phellinus igniarus and Phellinus pipi at 10–1 mg/mL inhibited the haemolytic activity of the His-tag-VpC-terminal domain from 67.7% to 87.42%, respectively. Hence applying the His-tag-VpC-terminal domain as a simple biological material to evaluate quickly potential derivatives against the Vptlh in vivo conditions will accessible and more advantageous than using the whole of the Vptlh.