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Zhao Y, Chen K, Yang H, Wang Y, Liao X. Semirational Design Based on Consensus Sequences to Balance the Enzyme Activity-Stability Trade-Off. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6454-6462. [PMID: 38477968 DOI: 10.1021/acs.jafc.3c08620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
In this study, the phenomenon of the stability-activity trade-off, which is increasingly recognized in enzyme engineering, was explored. Typically, enhanced stability in enzymes correlates with diminished activity. Utilizing Rosa roxburghii copper-zinc superoxide dismutase (RrCuZnSOD) as a model, single-site mutations were introduced based on a semirational design derived from consensus sequences. The initial set of mutants was selected based on activity, followed by combinatorial mutation. This approach yielded two double-site mutants, D25/A115T (18,688 ± 206 U/mg) and A115T/S135P (18,095 ± 1556 U/mg), exhibiting superior enzymatic properties due to additive and synergistic effects. These mutants demonstrated increased half-lives (T1/2) at 80 °C by 1.2- and 1.6-fold, respectively, and their melting temperatures (Tm) rose by 3.4 and 2.5 °C, respectively, without any loss in activity relative to the wild type. Via an integration of structural analysis and molecular dynamics simulations, we elucidated the underlying mechanism facilitating the concurrent enhancement of both thermostability and enzymatic activity.
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Affiliation(s)
- Yang Zhao
- National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Sichuan Advanced Agricultural and Industrial Institute, China Agricultural University, Chengdu 611400, China
| | - Kun Chen
- National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Haixia Yang
- National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yongtao Wang
- National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xiaojun Liao
- National Engineering Research Center for Fruit & Vegetable Processing, Key Laboratory of Fruit & Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory for Food Non-Thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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Cao Z, Chen H, Zhou C, Gong M, Li Y, Shao Y, Wu Y, Bao D. Exogenous γ-Aminobutyric Acid (GABA) Enhanced Response to Abiotic Stress in Hypsizygus marmoreus by Improving Mycelial Growth and Antioxidant Capacity. Metabolites 2024; 14:94. [PMID: 38392986 PMCID: PMC10890280 DOI: 10.3390/metabo14020094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/25/2024] Open
Abstract
γ-Aminobutyric (GABA) acid is a nutrient and signaling molecule existing in many plants, participating in the regulation of metabolism and various physiological activities. Two strains of Hypsizygus marmoreus (a white variety and a brown variety) were investigated to study the impact of exogenous GABA on mycelial growth and the response to stress. Mycelial growth, microscopic morphology, antioxidant profile, and gad2 expression in H. marmoreu were investigated under salt, dehydration, or cold stress. The results indicated that 5 mM GABA stimulated mycelial growth under standard cultivation conditions, whereas GABA addition over 10 mM hindered the growth. Under salt, dehydration, or cold stress, treatment with 5 mM GABA significantly enhanced the mycelial growth rate and density of both H. marmoreus strains by promoting front hyphae branching. Meanwhile, the activities of key antioxidant enzymes such as peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) were enhanced by GABA, thereby augmenting the defensive network against abiotic stress. Additionally, gad2 expression and GABA concentration were increased under abiotic stresses as a resistance regulation response. The exogenous addition of GABA strengthened the upregulation of gad2 expression and GABA production. These findings indicated that exogenously adding low concentrations of GABA effectively enhanced the mycelial growth and antioxidant profile of H. marmoreus, thereby improving its resistance against stresses.
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Affiliation(s)
- Zhi Cao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Hongyu Chen
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Chenli Zhou
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Ming Gong
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Yan Li
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Youran Shao
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Yingying Wu
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
| | - Dapeng Bao
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
- National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
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Zhang J, Li J, Gong J, Liu J, Wang Y, Zhao F, Sun S, Wang W. A novel highly thermostable and stress resistant ROS scavenging metalloprotein from Paenibacillus. Arch Biochem Biophys 2024; 751:109837. [PMID: 38007074 DOI: 10.1016/j.abb.2023.109837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/19/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023]
Abstract
Reactive oxygen species (ROS) are unstable metabolites produced during cellular respiration that can cause extensive damage to the body. Here we report a unique structural metalloprotein called RSAPp for the first time, which exhibits robust ROS-scavenging activity, high thermostability, and stress resistance. RSAPp is a previously uncharacterized DUF2935 (domain of unknown function, accession number: cl12705) family protein from Paenibacillus, containing a highly conserved four-helix bundle with binding sites for variable-valence metal ions (Mn2+/Fe2+/Zn2+). Enzymatic characterization results indicated that RSAPp displays the functionality of three different antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). In particular, RSAPp exhibits a significant SOD-like activity that is remarkably effective in eliminating superoxide radicals (up to kcat/KM = 2.27 × 1011 mol-1 s-1), and maintains the catalytical active in a wide range of temperatures (25-100 °C) and pH (pH 2.0-9.0), as well as resistant to high temperature, alkali and acidic pH, and 55 different concentrations of detergent agents, chemical solvents, and inhibitors. These properties make RSAPp an attractive candidate for various industrial applications, including cosmetics, food, and pharmaceuticals.
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Affiliation(s)
- Jingjing Zhang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Jiabin Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Jingbo Gong
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Jingjing Liu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Yijia Wang
- Laboratory of Oncologic Molecular Medicine, Tianjin Union Medical Center, Nankai University, Tianjin, 300121, PR China
| | - Fang Zhao
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Shenmei Sun
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China
| | - Wei Wang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, TEDA Institute of Biological Sciences and Biotechnology, Nankai University, TEDA, Tianjin, 300457, PR China; Tianjin Key Laboratory of Microbial Functional Genomics, Tianjin, 300457, PR China.
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Beneficial effects of high pressure processing on the interaction between RG-I pectin and cyanidin-3-glucoside. Food Chem 2022; 383:132373. [PMID: 35183967 DOI: 10.1016/j.foodchem.2022.132373] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/29/2022] [Accepted: 02/05/2022] [Indexed: 11/20/2022]
Abstract
In the present study, the effects of high-pressure processing (HPP) on the binding capacity, structural properties, antioxidant capacity and stability of rhamngalacturonan I (RG-I) pectin and cyanidin-3-glucoside (C3G) were investigated. HPP was found to have a positive effect on the binding between the two molecules, and the binding rate was increased by 32.8% after treatment (500 MPa/15 min). The increase in the binding rate is mainly due to the influence of high pressure on noncovalent effects such as hydrogen bonding and hydrophobicity. The results indicate that high pressure can be used to maintain the antioxidant capacity of C3G and improve the stability of C3G. The C3G retention rate is increased by 34.0% and 38.3% after heat treatment and simulated digestion, respectively. The results indicate that HPP improved stability of the C3G-RG-I pectin complex through interaction between C3G and RG-I pectin.
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5
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Zhao Y, Zhao L, Zhang W, Rao L, Wang Y, Liao X. Production of a Novel Superoxide Dismutase by Escherichia coli and Pichia pastoris and Analysis of the Thermal Stability of the Enzyme. Front Nutr 2022; 9:850824. [PMID: 35356736 PMCID: PMC8959677 DOI: 10.3389/fnut.2022.850824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 01/31/2022] [Indexed: 12/25/2022] Open
Abstract
Previously, a new copper-zinc SOD (CuZnSOD) isolated from chestnut rose (Rosa roxburghii) with good stability was described. In this study, the biosynthetic approach was used to create recombinant CuZnSOD. RACE PCR was also used to amplify the full-length CuZnSOD gene from chestnut rose, and the ORF segment was expressed in E. coli BL21 and P. pastoris GS115. For characterization, the enzyme was isolated in two steps in E. coli and one step in P. pastoris. The biochemical properties of the two recombinant enzymes were similar, and their optimal reaction pH and temperature were 6.0 and 50°C, respectively. According to molecular dynamics simulation, the CuZnSOD showed high stability from 70 to 90°C, and eight amino acids are important for enzyme thermal stability at high temperatures. This study set the stage for industrial manufacture by filling gaps in the link between conformational changes and the thermal stability of the new CuZnSOD.
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Affiliation(s)
- Yang Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
- Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
| | - Liang Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
- Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
| | - Weiwei Zhang
- Department of Applied Physics, China Agricultural University, Beijing, China
| | - Lei Rao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
- Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
| | - Yongtao Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
- Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
- Yongtao Wang
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
- Key Laboratory of Fruit and Vegetable Processing, Ministry of Agriculture and Rural Affairs, Beijing, China
- Beijing Key Laboratory for Food Non-thermal Processing, Beijing, China
- *Correspondence: Xiaojun Liao
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6
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Processing of chestnut rose juice using three-stage ultra-filtration combined with high pressure processing. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Wang K, Xu Z, Liao X. Bioactive compounds, health benefits and functional food products of sea buckthorn: a review. Crit Rev Food Sci Nutr 2021; 62:6761-6782. [PMID: 33783272 DOI: 10.1080/10408398.2021.1905605] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Sea buckthorn (Hippophae rhamnoides L.), which has been categorized as a "medicine food homology" fruit by China's National Health Commission for both nutritional and medicinal purposes, has nearly 200 kinds of nutritive and bioactive compounds such as polyunsaturated fatty acids, carotenoids, sugar alcohols, superoxide dismutase and phytosterols. Significant bioactivity, including cardiovascular improvement, antidiabetic and anti-obesity activity, have highlighted the application of sea buckthorn. This review compiled a database of the phytochemical compounds in sea buckthorn, which contains the contents of 106 nutrients and 74 bioactive compounds. The health benefits of sea buckthorn and its extracts were summarized and the mechanism of anti-oxidation and anti-inflammation were introduced in detail. Seventeen common marketed products of sea buckthorn from 8 countries were collected. A future scope is really needed to explore the mechanism of sea buckthorn bioactive compounds along with the incorporation cost-effective functional food products.
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Affiliation(s)
- Kewen Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhenzhen Xu
- Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Quality Standard & Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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Hou Z, Chen S, Ye X. High pressure processing accelarated the release of RG-I pectic polysaccharides from citrus peel. Carbohydr Polym 2021; 263:118005. [PMID: 33858565 DOI: 10.1016/j.carbpol.2021.118005] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 11/15/2022]
Abstract
High pressure processing (HPP) has become a promising strategy for extracting bioactive constituents. In this study, the impact of HPP treatment at various pH values (2.0, 8.0, and 12.0) on the macromolecular, structural, antioxidant capacity, rheological characteristics and gel properties of citrus pectic polysaccharide was investigated. The results showed that pressure and pH significantly affected the yield and Rhamnogalacturonan I (RG-I) characterizations. The yields of high pressure extraction at pH 12 (28.13 %-33.95 %) were significantly higher than the yields at pH 2 (14.85 %-16.11 %) and pH 8 (8.75 %-9.65 %). The yield of HPP (500 MPa/10 min) assisted alkali extraction is more than 2 times of that of HPP assisted acid extraction. The RG-I structure ratio of HPP-alkali extraction pectic polysaccharide (74.51 %) was significantly higher than that of traditional pectin (41.83 %). The results showed that HPP assisted alkali is a potential pectic polysaccharide extraction technology.
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Affiliation(s)
- Zhiqiang Hou
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou, 315100, China.
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou, 315100, China
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Rosa AC, Corsi D, Cavi N, Bruni N, Dosio F. Superoxide Dismutase Administration: A Review of Proposed Human Uses. Molecules 2021; 26:1844. [PMID: 33805942 PMCID: PMC8037464 DOI: 10.3390/molecules26071844] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022] Open
Abstract
Superoxide dismutases (SODs) are metalloenzymes that play a major role in antioxidant defense against oxidative stress in the body. SOD supplementation may therefore trigger the endogenous antioxidant machinery for the neutralization of free-radical excess and be used in a variety of pathological settings. This paper aimed to provide an extensive review of the possible uses of SODs in a range of pathological settings, as well as describe the current pitfalls and the delivery strategies that are in development to solve bioavailability issues. We carried out a PubMed query, using the keywords "SOD", "SOD mimetics", "SOD supplementation", which included papers published in the English language, between 2012 and 2020, on the potential therapeutic applications of SODs, including detoxification strategies. As highlighted in this paper, it can be argued that the generic antioxidant effects of SODs are beneficial under all tested conditions, from ocular and cardiovascular diseases to neurodegenerative disorders and metabolic diseases, including diabetes and its complications and obesity. However, it must be underlined that clinical evidence for its efficacy is limited and consequently, this efficacy is currently far from being demonstrated.
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Affiliation(s)
- Arianna Carolina Rosa
- Department of Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (D.C.); (N.C.); (F.D.)
| | - Daniele Corsi
- Department of Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (D.C.); (N.C.); (F.D.)
| | - Niccolò Cavi
- Department of Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (D.C.); (N.C.); (F.D.)
| | - Natascia Bruni
- Istituto Farmaceutico Candioli, Strada Comunale di None, 1, 10092 Beinasco, Italy;
| | - Franco Dosio
- Department of Scienza e Tecnologia del Farmaco, University of Turin, Via P. Giuria 9, 10125 Turin, Italy; (D.C.); (N.C.); (F.D.)
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Li N, Tong M, Glibert PM. Effect of allelochemicals on photosynthetic and antioxidant defense system of Ulva prolifera. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 224:105513. [PMID: 32504860 DOI: 10.1016/j.aquatox.2020.105513] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/28/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
Ulva prolifera is a macroalgae that forms massive blooms, negatively impacting natural communities, aquaculture operations and recreation. The effects of the natural products, eugenol, β-myrcene, citral and nonanoic acid on the growth rate, antioxidative defense system and photosynthesis of Ulva prolifera were investigated as a possible control strategy for this harmful taxon. Negative effects on growth were observed with all four chemicals, due to the excessive production of reactive oxygen species and oxidative damage to the thalli. However, the response of U. prolifera under the four chemicals stress was different at the cellular level. β-myrcene, the most effective compound in terms of growth inhibition, induced oxidative stress as shown by the damage of total antioxidant capacity (T-AOC) and the downregulation of the glutathione-ascorbate (GSH-ASA) cycle which inhibited the antioxidative system. This chemical also inhibited photosynthesis and photoprotection mechanisms in U. prolifera, resulting in growth limitation. In contrast, U. prolifera was less affected by the second tested chemical, eugenol, and showed no significant change on photosynthetic efficiency in the presence of the chemical. The inhibition effects of the third and fourth tested chemicals, nonanoic acid and citralon, on growth and on the antioxidant defense system in U. prolifera were inferior. These results provide a potential avenue for controlling green tides in the future.
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Affiliation(s)
- Naicheng Li
- Ocean College, Zhejiang University, Zhoushan, 316021, China
| | - Mengmeng Tong
- Ocean College, Zhejiang University, Zhoushan, 316021, China.
| | - Patricia M Glibert
- University of Maryland Center for Environment Science, Horn Point Laboratory, Cambridge, MD, 21613, USA
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Hou Z, Yang H, Zhao Y, Xu L, Zhao L, Wang Y, Liao X. Chemical characterization and comparison of two chestnut rose cultivars from different regions. Food Chem 2020; 323:126806. [PMID: 32330647 DOI: 10.1016/j.foodchem.2020.126806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 03/20/2020] [Accepted: 04/13/2020] [Indexed: 10/24/2022]
Abstract
Chestnut rose (Rosa roxburghii Tratt.) is a native fruit in China, rich in bioactive compounds. Chemical properties and bioactive compounds in the largest two cultivars (Gui Nong No. 5 and Golden Cili) of chestnut rose from different regions were analyzed and compared. Meanwhile, catechin, quercetin, myricetin, kaempferol, ellagic acid and ellagic acid glucuronide were identified. By comparison, Guinong No. 5 showed higher SOD actitviy (5,687.67-5,797.48 U/g), ascorbic acid (1.38-1.47 g/100 g), catechin (971.67-1405.75 mg/100 g) and myricetin (851.32-876.32 mg/100 g), antioxidant capacity, while Golden Cili was characterized with higher total flavnoids (263.30-278.63 mg/100 g), β-carotene (747.31-859.21 μg/100 g) and zeaxanthin (186.03-268.78 μg/100 g), glucose (10.32-12.03 g/100 g) and arabinose (3.22-3.43 g/100 g), tartaric acid (0.20-0.52 g/100 g), quercetin (1,034.63-1,411.08 mg/100 g). The principal components analysis method can be used to separate two cultivars well and partial least squares discrimination analysis method can be used to distinguish different planting regions well.
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Affiliation(s)
- Zhiqiang Hou
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China
| | - Huanzhi Yang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China
| | - Yang Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China
| | - Lei Xu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China
| | - Liang Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China
| | - Yongtao Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China.
| | - Xiaojun Liao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Key Lab of Fruit and Vegetable Processing of Ministry of Agriculture, China Agricultural University, Beijing 100083, China; Beijing Key Laboratory for Food Non-thermal Processing, China Agricultural University, Beijing 100083, China.
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