Article
Environmental Sciences
Chen Ma, Song Qin, Hongli Cui, Zhengyi Liu, Longchuan Zhuang, Yong Wang, Zhihai Zhong
Summary: The study revealed that under high temperature conditions, G. blodgettii and G. lemaneiformis exhibited different growth and biochemical responses to nitrogen source concentrations. Higher nitrogen concentrations improved their growth rates and photosynthetic characteristics.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
Xiaoshan Long, Xiao Hu, Huan Xiang, Shengjun Chen, Laihao Li, Bo Qi, Chunsheng Li, Shucheng Liu, Xianqing Yang
Summary: The research focused on analyzing the structural characteristics and hypolipidemic activity in vitro of G. lemaneiformis polysaccharide (GLP) and its degradation products. The results showed changes in chemical composition, particle size, and color brightness of GLP after degradation by H2O2-Vc, while thermal stability remained unaffected. Additionally, polysaccharide degradation led to significant differences in structure and activity.
Article
Chemistry, Medicinal
Tian Fang, Xiaoqian Zhang, Shanshan Hu, Yanyan Yu, Xue Sun, Nianjun Xu
Summary: The study investigated the antioxidant activities of Gracilariopsis lemaneiformis polysaccharides after degradation, with GDP degraded by beta-dextranase showing the highest antioxidant activity. It was found that GDP can significantly improve oxidative damage and enhance antioxidant capacity.
Article
Biochemistry & Molecular Biology
Li Tang, Xiaomin Luo, Meiyuan Wang, Zhong Wang, Juan Guo, Fansheng Kong, Yongguang Bi
Summary: In this study, stable selenium nanoparticles were successfully prepared using Gracilaria lemaneiformis polysaccharides as stabilizer and dispersing agent. The nanoparticles showed good storage stability and high antioxidant capacity under different conditions, indicating their potential application as antioxidant and antidiabetic agents in food and medical fields.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Plant Sciences
Thais Magda Morais Sampaio, Antonia Thassya Lucas dos Santos, Maria Audilene de Freitas, Jose Weverton Almeida-Bezerra, Victor Juno Alencar Fonseca, Henrique Douglas Melo Coutinho, Maria Flaviana Bezerra Morais-Braga, George Emmanuel Cavalcanti de Miranda, Jacqueline Cosmo Andrade-Pinheiro
Summary: This study evaluated the antifungal activity and in vitro modifying potential of the G. cervicornis extract against Candida spp. The extract showed fungistatic activity against all tested Candida species and was able to modify the action of Fluconazole against C. krusei. This research provides new possibilities for combination therapy using G. cervicornis extract to treat Candida infections.
SOUTH AFRICAN JOURNAL OF BOTANY
(2022)
Article
Food Science & Technology
Yufeng Gong, Yongxuan Ma, Peter Chi-Keung Cheung, Lijun You, Lan Liao, Sandra Pedisic, Viktoryia Kulikouskaya
Summary: UV/H2O2 treatment significantly reduced the molecular weight and particle size of GLP, decreased the content of total sugars, uronic acids and proteins, and modified its surface morphology, showing the potential to enhance the anti-inflammatory activity of algal sulfated polysaccharides.
FOOD AND CHEMICAL TOXICOLOGY
(2021)
Article
Food Science & Technology
Antonia Livania Linhares de Aguiar, Marjory Lima Holanda Araujo, Jessica Roberta Pereira Martins, Isabele Braga da Silva, Elisabeth Mary Cunha da Silva
Summary: This study investigated the physical-chemical characteristics and antioxidant activity of R-phycoerythrin from Gracilaria birdiae (CE-Gb), as well as its spectroscopic stability against different additives. The results showed that the antioxidant activity of R-PE was dependent on its concentration. Additionally, CE-Gb without preservatives had the highest degradation of R-PE, but the addition of ascorbic acid (AA) helped to reduce color loss during storage. G. birdiae was identified as a potential source of R-PE, which could be utilized as a dye in the food industry.
JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY
(2023)
Article
Chemistry, Medicinal
Xiaoshan Long, Xiao Hu, Shaobo Zhou, Huan Xiang, Shengjun Chen, Laihao Li, Shucheng Liu, Xianqing Yang
Summary: Gracilaria lemaneiformis polysaccharide (GLP) was degraded by hydrogen peroxide combined with vitamin C (H2O2-Vc) to produce a new product called GLP-HV. The chemical characteristics and in vitro activities of GLP-HV and its degradation products were assessed.
Article
Plant Sciences
Qikun Xing, Young Woo Kim, Daehyeon Kim, Ji-Sook Park, Hyun I. L. Yoo, Charles Yarish, Jang K. Kim
Summary: The study investigates the physiological responses of Gracilaria vermiculophylla, a red macroalga, after exposure to different concentrations of oxybenzone. Results show that oxybenzone has a high toxicity at a concentration of 0.1 mM, significantly decreasing growth rate, pigment content, and photosynthetic rate. At lower concentrations, oxybenzone induces no significant changes in physiological responses except for a decrease in pigment content at 0.001 mM.
Article
Biotechnology & Applied Microbiology
Qionglin Chen, Jiaqi Li, Suyan Xue, Han Xu, Zengjie Jiang, Jiangguang Fang, Yuze Mao
Summary: The use of Gracilaria chouae and Gracilariopsis lemaneiformis in aquaculture has been expanding rapidly due to their bio- and eco-functions. This study explored the carbon use mechanism of these seaweeds in different carbonate systems. It was found that high CO2 and normal HCO3- concentrations led to an increase in net photosynthetic rate and other physiological parameters in both seaweeds. Gracilariopsis lemaneiformis showed higher photosynthetic rates and pH changes. The inhibition experiments revealed different mechanisms of HCO3- utilization in these seaweeds.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Mohammad Danish, Mohammad Shahid, Mohammad Tarique Zeyad, Najat A. Bukhari, Fatimah S. Al-Khattaf, Ashraf Atef Hatamleh, Sajad Ali
Summary: This study assessed the potential hazards of silver nanoparticles on ashwagandha growth and found that a metal-tolerant plant growth-promoting rhizobacterium could alleviate the toxicity and improve plant productivity.
Article
Environmental Sciences
Ying-ying Sun, Jing Zhou, Xiu Han, Nai-sheng Zhang, Zi-xuan Yang, Xin Zhang
Summary: The ethanol extracts of Gracilaria lemaneiformis were separated into five fractions with antialgal activities, containing natural products that showed significant inhibition against red tide microalgae such as Karenia mikimotoi and Skeletonema costatum. With potential as antialgal agents, these natural products were isolated for the first time from marine macroalgae, indicating Gracilaria lemaneiformis as a valuable source of antialgal compounds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Plant Sciences
Dan Wang, Wenrui Zhang, Runqiang Zhang, Nan Tao, Liang Si, Changhong Guo
Summary: Nitrobenzene (NB) is a common toxic pollutant in industrial wastewater, and it has phytotoxic effects on rice seedlings, particularly on root growth. NB exposure reduces the chlorophyll content and the expression levels of chlorophyll synthesis genes in rice seedlings, and increases the accumulation of harmful substances such as reactive oxygen species. Additionally, NB induces the expression of antioxidant enzyme genes, but at high concentrations, it inhibits gene expression levels.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Aziz Ben Ghedifa, Julia Vega, Nathalie Korbee, Fethi Mensi, Felix L. Figueroa, Saloua Sadok
Summary: In a study on the physiology of the red macroalga Gracilaria gracilis, it was found that different light qualities had varying effects on biomass production, photosynthetic activity, protein and pigment contents, polyphenol concentration, antioxidant activity, and MAAs UV-absorbing compounds. Specifically, blue light stimulated phenolic compound accumulation, green light induced protein and R-PE accumulation, red light boosted growth rate, and UV radiation increased MAAs content significantly.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Environmental Sciences
A. Vinuganesh, Amit Kumar, S. Prakash, Shereen Magdy Korany, Emad A. Alsherif, Samy Selim, Hamada AbdElgawad
Summary: This study evaluated the response of Gracilaria foliifera and Gracilaria debilis to CO2-induced seawater acidification, finding that these species showed increased growth, productivity, and chemical composition but decreased mineral content under acidification. Additionally, acidified samples exhibited enhanced antimicrobial activity.
MARINE POLLUTION BULLETIN
(2022)