The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. https://scholars.ntou.edu.tw:443 2026-04-15T16:51:52Z 2026-04-15T16:51:52Z 方志中 何達立 http://scholars.ntou.edu.tw/handle/123456789/26553 2026-03-17T01:40:38Z 2025-01-01T00:00:00Z

Title: 小水線面雙體離岸風電人員運輸船耐海性能評估 Authors: 方志中; 何達立

2025-01-01T00:00:00Z Ly, Tien H Huang, Cheng-Ting Lee, Meng-Chou Thanh, Vo V Diep, Doan X http://scholars.ntou.edu.tw/handle/123456789/26552 2026-03-16T09:11:06Z 2023-12-01T00:00:00Z

Title: Determination of the growth performance and reproductive season of wild Channa lucius (Cuvier, 1831) populations of genus Channa (Channidae, Perciformes) in the Mekong Delta, Vietnam Authors: Ly, Tien H; Huang, Cheng-Ting; Lee, Meng-Chou; Thanh, Vo V; Diep, Doan X Abstract: This study aimed to investigate the growth and spawning characteristics of wild Channa lucius (Cuvier, 1831) populations in the Mekong Delta, Vietnam. The study was carried out from March 2011 to February 2012. The length-weight relationship of C. lucius was determined according to the equations W = 0.0044L(3.2494), R-2 = 0.9157 (female fish) and W = 0.0047L(3.2178), R-2 = 0.9434 (male fish). The length and weight of the body for female fish ranged from 16.3 to 36.0 cm and 49.0 to 550.0 g, and for male fish, from 14.6 to 38.2 cm and 46.0 to 639.0 g, respectively. Female and male fish had almost similar lengths at first maturity (21.3958 cm for females and 21.3952 cm for males). The condition factor of female fish ranged from 0.842 to 0.864 and for male fish ranged from 0.848 to 0.874. The gonadosomatic index of female fish was highest in June (1.68%) and lowest in November (0.69%); that of male fish was highest in June (0.53%) and lowest in September (0.15%). The sexual maturity rate (SMR) of female fish peaked in May, with SMRs of 33.3% (stage III) and 58.3% (stage IV). In conclusion, C. lucius has a positive allometric range (b > 3), reaching sexual maturity when its length reaches 21.39 cm for both sexes, and the spawning season begins in December but peaks in May and June.

2023-12-01T00:00:00Z Windarto, Seto Hsu, Jue-Liang Lee, Meng-Chou http://scholars.ntou.edu.tw/handle/123456789/26551 2026-03-16T09:05:19Z 2024-06-01T00:00:00Z

Title: First report of antioxidant potential of peptide fraction derived from Colaconema formosanum (Rhodophyta) protein hydrolysates Authors: Windarto, Seto; Hsu, Jue-Liang; Lee, Meng-Chou Abstract: Foods that contain natural antioxidants can improve people's health and performance and make them more resistant to environmental stressors like diseases, lousy living conditions, and heat stress. Marine algae are well known for their function as an antioxidant. Colaconema formosanum is a new rhodophyte discovered in Taiwan and its bioactive activities are rarely studied. This work aims to prepare the protein hydrolysate fraction with antioxidant properties in C. formosanum using single enzyme or complex enzyme hydrolysis. Afterward, a 3 kDa molecular weight cut-off (MWCO) was used for centrifugation, and then fractionation was carried out using Strong Cation Exchange (SCX) Chromatography. The quantification of antioxidant activity was performed using the DPPH test. The results showed that the thermolysin hydrolysate (IC50 1.48 +/- 0.92 mg/mL) and the combination of trypsin-thermolysin hydrolysates (IC50 1.37 +/- 0.84 mg/mL) had the highest antioxidant activity. The fractionation procedure with strong cation exchange (SCX) yielded fraction C from thermolysin hydrolysates, which exhibited the most significant antioxidant activity with an IC50 value of 0.47 +/- 0.02 mg/mL. The fraction 4 derived from trypsin-thermolysin hydrolysates exhibited the most potent antioxidant activity (IC50: 0.34 +/- 0.002 mg/mL). No previous reports have been made about the antioxidant properties of the hydrolysate fractions derived from C. formosanum proteins. Consequently, these findings could serve as a foundation for exploring peptides that have potential therapeutic sources for reducing oxidative stress.

2024-06-01T00:00:00Z Windarto, Seto Lee, Meng-Chou Nursyam, Happy Hsu, Jue-Liang http://scholars.ntou.edu.tw/handle/123456789/26550 2026-03-16T08:58:14Z 2024-12-01T00:00:00Z

Title: A novel phycoerythrin-derived peptide from Colaconema formosanum: Synthesis, in vitro, and in silico study on angiotensin-converting enzyme (ACE) inhibitory activity Authors: Windarto, Seto; Lee, Meng-Chou; Nursyam, Happy; Hsu, Jue-Liang Abstract: Colaconema formosanum, the red algae used in this study, has never been documented for its bioactivities as an angiotensin-converting enzyme inhibitor (ACEI). This study aims to discover ACEI derived from C. formosanum with a mixture of enzymes and orthogonal bioassay-guided fractionation through in vitro and in silico approaches. LRDGEIILR (LR-9) was isolated from the protein hydrolysate of C. formosanum digested by a combination of proteases (pepsin and thermolysin). It is derived from phycoerythrin, a protein abundant in most red algae. The LR-9 has an IC50 value of 94.28 +/- 1.84 mu M. The kinetics of inhibition revealed LR-9 to be a competitive inhibitor. The results of kinetic studies were rationalized further using molecular docking, which showed that LR-9 interacts preferentially with critical residues in the ACE active site. Based on the toxicity prediction, LR-9 was non-toxic. This study suggests that ACEI peptides extracted from C. formosanum could be an alternative source for developing hypertension-treating functional foods.

2024-12-01T00:00:00Z