文献类型：期刊文献

英文题名：Influence of Silicate Concentrations on Growth, Carotenoid, and Fatty Acid Profiles of the Marine Diatom Conticribra weissflogii

作者：Amenorfenyo, David Kwame[1];Li, Feng[1,2];Rui, Xiangyu[1];Huang, Xianghu[1];Li, Changling[1]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[2]Guangdong Prov Key Lab Aquat Anim Dis Control & Hl, Zhanjiang 524088, Peoples R China

年份：2024

卷号：22

期号：11

外文期刊名：MARINE DRUGS

收录：SCI-EXPANDED(收录号：WOS:001365647700001)、、Scopus(收录号：2-s2.0-85210440639)、WOS

基金：This research was mainly supported by the Postgraduate Education Innovation Project of Guangdong Ocean University (grant number 040517022403), the Marine Young Talent Innovation Program of Zhanjiang City (grant number 2022E05003), and the Program for Scientific Research Start-up Funds of Guangdong Ocean University (grant number 060302022103).

语种：英文

外文关键词：Conticribra weissflogii; polyunsaturated fatty acids (PUFAs); fucoxanthin; carotenoids; fatty acids

外文摘要：Enhancing microalgal growth and bioactive compound production is becoming a duty for improving photosynthetic microorganisms. In this study, the growth, carotenoid, and fatty acid profiles of Conticribra weissflogii were studied under four different silicate concentrations and silicate-deficient conditions in an f/2 medium with continuous aeration, light intensity (30 +/- 2 mu mol m-2 s-1), salinity (25 +/- 2 parts per thousand), pH (8), and temperature (25 +/- 2 degrees C). At the end of the experiment, we observed that a silicate concentration of 120 mg L-1 produced the maximum biomass dry weight (0.86 g L-1), carotenoid content (1.63 mu g mL-1), and fucoxanthin content (1.23 mg g-1) in C. weissflogii. The eicosapentaenoic acid (EPA) (11,354.37 mu g g-1), docosahexaenoic acid (DHA) (2516.16 mu g g-1), gamma-linolenic acid (C18:3n6) (533.51 mu g g-1), and arachidonic acid (C20:4n6) (1261.83 mu g g-1) contents were significantly higher at Si 120 mg L-1. The results further showed the maximum fatty acid content in C. weissflogii at Si 120 mg L-1. However, the silicate-deficient conditions (Si 0 mg L-1) resulted in higher levels of saturated fatty acids (38,038.62 mu g g-1). This study presents a practical approach for the large-scale optimization of biomass, carotenoid, fucoxanthin, and fatty acid production in C. weissflogii for commercial purposes.