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Mouga T, Pereira J, Moreira V, Afonso C. Unveiling the Cultivation of Nostoc sp. under Controlled Laboratory Conditions. BIOLOGY 2024; 13:306. [PMID: 38785788 PMCID: PMC11118237 DOI: 10.3390/biology13050306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/24/2024] [Accepted: 04/26/2024] [Indexed: 05/25/2024]
Abstract
Cyanobacteria, photoautotrophic Gram-negative bacteria, play a crucial role in aquatic and terrestrial environments, contributing significantly to fundamental ecological processes and displaying potential for various biotechnological applications. It is, therefore, critical to identify viable strains for aquaculture and establish accurate culture parameters to ensure an extensive biomass supply for biotechnology purposes. This study aims to establish optimal laboratory batch culture conditions for Nostoc 136, sourced from Alga2O, Coimbra, Portugal. Preliminary investigations were conducted to identify the optimal culture parameters and to perform biomass analysis, including protein and pigment content. The highest growth was achieved with an initial inoculum concentration of 1 g.L-1, using modified BG11 supplemented with nitrogen, resulting in a Specific Growth Rate (SGR) of 0.232 ± 0.017 μ.day-1. When exposed to white, red, and blue LED light, the most favourable growth occurred under a combination of white and red LED light exhibiting an SGR of 0.142 ± 0.020 μ.day-1. The protein content was determined to be 10.80 ± 2.09%. Regarding the pigments, phycocyanin reached a concentration of 200.29 ± 30.07 µg.mL-1, phycoerythrin 148.29 ± 26.74 µg.mL-1, and allophycocyanin 10.69 ± 6.07 µg.mL-1. This study underscores the influence of light and nutrient supplementation on the growth of the Nostoc biomass.
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Affiliation(s)
- Teresa Mouga
- MARE-Marine and Environment Research Center/ARNET-Aquatic Research Network, School of Tourism and Maritime Technology, Polytechnic University of Leiria, 2520-614 Peniche, Portugal
| | - Jéssica Pereira
- School of Tourism and Maritime Technology, Polytechnic University of Leiria, 2520-614 Peniche, Portugal
| | - Vitória Moreira
- School of Tourism and Maritime Technology, Polytechnic University of Leiria, 2520-614 Peniche, Portugal
| | - Clélia Afonso
- MARE-Marine and Environment Research Center/ARNET-Aquatic Research Network, School of Tourism and Maritime Technology, Polytechnic University of Leiria, 2520-614 Peniche, Portugal
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Susanto E, Mustajab RM, Kamil M, Atho'illah MF, Riyadi PH, Kurniasih RA, Pangestuti R, Prasetyo DYB. Unlocking Nature's Potential: A Comparative Study of Bioactive Compounds Extracted from Tropical Microalgae. Mol Biotechnol 2024:10.1007/s12033-024-01080-2. [PMID: 38300455 DOI: 10.1007/s12033-024-01080-2] [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: 06/28/2023] [Accepted: 01/12/2024] [Indexed: 02/02/2024]
Abstract
To promote the use of marine microalgae for nutraceuticals, we aimed to characterize extracts of Nannochloropsis oculata, Porphyridium cruentum, and Skeletonema costatum, all of which harbor numerous bioactive substances. Chlorophylls and carotenoids were identified as the primary pigments in N. oculata and S. costatum extracts. Furthermore, the total phenolic and total flavonoid contents in the three microalgae ranged 20.32-21.96 mg GAE/g and 0.3-2.1 mg QE/g, respectively. Notably, the extract of N. oculata exhibited the most significant radical scavenging activity in both 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays, with flavonoids and pigments identified as the main contributors to antioxidant activities. Our results revealed variations in metabolite profiles among the microalgal extracts: N. oculata extract (43 types), P. cruentum (13 types), and S. costatum (21 types). Hexadecanamide emerged as the major metabolite detected in all microalgae. Collectively, the results of the present study may open new avenues of microalgae for various applications.
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Affiliation(s)
- Eko Susanto
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jl. Prof. Jacub Rais, Tembalang, Semarang, Jawa Tengah, 50275, Indonesia.
| | - Rabbani Mahir Mustajab
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jl. Prof. Jacub Rais, Tembalang, Semarang, Jawa Tengah, 50275, Indonesia
| | - Mustofa Kamil
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jl. Prof. Jacub Rais, Tembalang, Semarang, Jawa Tengah, 50275, Indonesia
| | - Mochammad Fitri Atho'illah
- Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Brawijaya, Jl. Veteran, Malang, Jawa Timur, 65145, Indonesia
| | - Putut Har Riyadi
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jl. Prof. Jacub Rais, Tembalang, Semarang, Jawa Tengah, 50275, Indonesia
| | - Retno Ayu Kurniasih
- Department of Fisheries Product Technology, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Jl. Prof. Jacub Rais, Tembalang, Semarang, Jawa Tengah, 50275, Indonesia
| | - Ratih Pangestuti
- Research Centre for Food Processing and Technology, National Research and Innovation Agency, Playen Gunung Kidul Yogyakarta, Yogyakarta, 55861, Indonesia
| | - Dwi Yanuar Budi Prasetyo
- Study Program of Fisheries Sciences, Nahdlatul Ulama University of Purwokerto, Jl. Sultan Agung, Banyumas, Jawa Tengah, 53144, Indonesia
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Bhattacharjya R, Tyagi R, Rastogi S, Ulmann L, Tiwari A. Response of varying combined nutrients on biomass and biochemical composition of marine diatoms Chaetoceros gracilis and Thalassiosira weissflogii. BIORESOURCE TECHNOLOGY 2024; 394:130274. [PMID: 38160848 DOI: 10.1016/j.biortech.2023.130274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
Marine diatoms have high adaptability and are known to accumulate lipids under nutrient stress conditions. The present study involves determining the effect of varying macro and micronutrients on growth kinetics and metabolite production of oleaginous marine diatoms, Thalassiosira weissflogii and Chaetoceros gracilis. The results highlighted that C. gracilis and T. weissflogii showed maximum biomass yield of 0.86 ± 0.06 g/L and 0.76 ± 0.01 g/L in the 2f and f supplemented medium respectively. A 2.5-fold increase in cellular lipid content was recorded in the 2f culture setup of both strains ranging from 20 % to 26.7 % (w/w). The study also reveals that high eutrophic nutrient media (f, 2f and 4f) triggered biomass productivity as well as total protein and carbohydrate content in both strains. Thus, providing a reproducible insight of trophic flexibility of diatoms, concomitant with the increment in multiple commercially valuable products.
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Affiliation(s)
- Raya Bhattacharjya
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Rashi Tyagi
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Subha Rastogi
- CSIR-National Botanical Research Institute, 436, Pratap Marg, Lucknow 226001, Uttar, India; CSIR-National Institute of Science Communication and Policy Research, New Delhi, India Pradesh, India
| | - Lionel Ulmann
- Laboratoire BiOSSE: Biologie des Organismes, Stress, Santé, Environnement, IUT Département Génie Biologique, Le Mans Université, F-53020 Laval, France
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India.
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Senousy HH, Khairy HM, El-Sayed HS, Sallam ER, El-Sheikh MA, Elshobary ME. Interactive adverse effects of low-density polyethylene microplastics on marine microalga Chaetoceros calcitrans. CHEMOSPHERE 2023; 311:137182. [PMID: 36356803 DOI: 10.1016/j.chemosphere.2022.137182] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/22/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Low-density polyethylene (LDPE) is broadly utilized worldwide, increasing more dramatically during the COVID-19 pandemic, and the majority ends up in the aquatic environment as microplastics. The influence of polyethylene microplastics (LDPE-MPs) on aquatic ecosystems still needs further investigation, especially on microalgae as typical organisms represented in all aquatic systems and at the base of the trophic chain. Thereby, the biological and toxicity impacts of LDPE-MPs on Chaetoceros calcitrans were examined in this work. The results revealed that LDPE-MPs had a concentration-dependent adverse effect on the growth and performance of C. calcitrans. LDPE-MPs contributed the maximum inhibition rates of 85%, 51.3%, 21.49% and 16.13% on algal growth chlorophyll content, φPSII and Fv/Fm, respectively. The total protein content, superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) activities were significantly increased at 25 mg L-1 LDPE-MPs by 1.37, 3.52, 2.75 and 1.84 folds higher than those of the controls to sustain the adverse effects of LDPE-MPs. Extracellular polymeric substance (EPS) and monosaccharides contents of C. calcitrans were improved under low concentration of LDPE-MPs, which could facilitate the adsorption of MPs particles on the microalgae cell wall. This adsorption caused significant physical damage to the algal cell structure, as observed by SEM. These results suggest that the ecological footprint of MPs may require more attention, particularly due to the continuing breakdown of plastics in the ecosystem.
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Affiliation(s)
- Hoda H Senousy
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Hanan M Khairy
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | - Heba S El-Sayed
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | - Eman R Sallam
- National Institute of Oceanography and Fisheries, NIOF, Egypt
| | - Mohamed A El-Sheikh
- Botany & Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mostafa E Elshobary
- Department of Botany, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
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Ahirwar A, Das S, Das S, Yang YH, Bhatia SK, Vinayak V, Ghangrekar MM. Photosynthetic microbial fuel cell for bioenergy and valuable production: A review of circular bio-economy approach. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.102973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Kumar Singh P, Bhattacharjya R, Kiran Marella T, Saxena A, Mishra B, Savio S, Congestri R, Sindhu R, Binod P, Tiwari A. Production of lipids and proteins from marine diatoms under changing pH and silica. BIORESOURCE TECHNOLOGY 2022; 362:127766. [PMID: 35963488 DOI: 10.1016/j.biortech.2022.127766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/05/2022] [Accepted: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Diatom algae are increasingly explored as an alternative sustainable source for functional biomolecules likes fucoxanthin, and eicosapentaenoic acid. But biomolecule quantity and quantity are influenced by growth conditions. So, effect of differential silica concentration (0-120 mg L-1) and medium pH (5.5-9.5) on growth and cellular biochemical composition of commercially important marine diatom species were studied. Growth rate of Thalassiosira sp., Skeletonema sp., and Chaetoceros sp., was higher with 30 mg L-1 Si at a pH of 7.5-8.5. Highest carbohydrate (153.71 mg g-1) and protein (17.34 mg g-1) content was found in Skeletonema sp. Silica concentration positively influenced chlorophyll and carotenoid content in a dose dependent manner. A medium pH of 8.5 and Si concentration between 60 and 120 mg L-1 was ideal for lipid production. The optimum concentration of Si and pH for maximum biomolecule production have been reported with further scope of utilizing these conditions in commercial scale systems.
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Affiliation(s)
- Pankaj Kumar Singh
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Raya Bhattacharjya
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Thomas Kiran Marella
- Algae Biomass and Energy System R&D Center (ABES), University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
| | - Abhishek Saxena
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Bharti Mishra
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India
| | - Saverio Savio
- Laboratory of Biology of Algae, Department of Biology, University of Rome 'Tor Vergata', Via Cracovia 1, 00133 Rome, Italy
| | - Roberta Congestri
- Laboratory of Biology of Algae, Department of Biology, University of Rome 'Tor Vergata', Via Cracovia 1, 00133 Rome, Italy
| | - Raveendran Sindhu
- Department of Food Technology, T K M Institute of Technology, Kollam - 691 505, Kerala, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR - National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum - 695 019, Kerala, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, India.
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