Article
Biotechnology & Applied Microbiology
Nur Syakina Jamali, Jamaliah Md Jahim, Tabassum Mumtaz, Peer Mohamed Abdul
Summary: The study showed that Caldicellulosiruptor saccharolyticus performs well in hydrogen production using palm oil mill effluent, with the highest hydrogen productivity rates achieved under specific conditions. Immobilizing the bacteria on activated carbon shows promise in consistently achieving high hydrogen productivity rates in extreme thermophilic conditions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Review
Chemistry, Physical
Safa Senan Mahmod, Shalini Narayanan Arisht, Jamaliah Md Jahim, Mohd Sobri Takriff, Jian Ping Tan, Abdullah Amru Indera Luthfi, Peer Mohamed Abdul
Summary: This study thoroughly investigates the treatment of palm oil mill effluent (POME) through closed dark fermentation (DF) system. Various enhancement methods for increasing hydrogen yield and improving process stability are discussed. Different pre-treatment methods and their effects on POME characteristics are reviewed. The study also examines different bioreactor designs and modifications applied to improve stability and productivity. The importance of further research towards a more inclusive and efficient POME treatment for biohydrogen production is emphasized.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biotechnology & Applied Microbiology
Zongjie Dai, Yan Zhu, Hongjun Dong, Chunhua Zhao, Yanping Zhang, Yin Li
Summary: Depletion of intracellular ATP significantly increased glycolytic rate, enhanced solvent production, and resulted in a wide range of metabolic changes in C. acetobutylicum DSM 1731. This finding provides a novel strategy for engineering solvent-producing C. acetobutylicum and other anaerobic microbial cell factories.
MICROBIAL CELL FACTORIES
(2021)
Article
Green & Sustainable Science & Technology
Muhammad Said, Andika Septian Sitanggang, Riski Julianda, Sri Pertiwi Estuningsih, Ahmad Fudholi
Summary: The study aimed to reduce BOD and COD values in aerobic fermentation process of POME by using a consortium of bacteria. Results showed a significant reduction in COD, BOD, and TSS values and production of methane in biogas during anaerobic fermentation process. High specific growth rate and low generation time were achieved, indicating effective degradation of organic and inorganic compounds in POME.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Mahboubeh Namdarimonfared, Hamid Zilouei, Hadiseh Tondro
Summary: This study assessed the feasibility of continuous hydrogen production in an anaerobic packed bed biofilm reactor (APBR) using paper mill effluent (PME) without any pretreatment or modification. The highest hydrogen concentration achieved was 41.5% at a hydraulic retention time (HRT) of 4 hours. The system showed potential for high hydrogen production rates and yields under different HRTs.
Review
Engineering, Chemical
Sharifah Mohammad, Siti Baidurah, Takaomi Kobayashi, Norli Ismail, Cheu Peng Leh
Summary: This article discusses the widespread use of ponding system or land application techniques for palm oil mill effluent (POME) treatment, particularly the integrated anaerobic-aerobic bioreactor (IAAB). Various POME treatment methods are explored in depth, with a focus on the promising IAAB system. The article also looks at the challenges and future prospects of POME treatment.
Article
Environmental Sciences
Shalini Narayanan Arisht, Safa Senan Mahmod, Peer Mohamed Abdul, Abdullah Amru Indera Lutfi, Mohd Sobri Takriff, Chyi-How Lay, Hemavathi Silvamany, Sureewan Sittijunda, Jamaliah Md Jahim
Summary: This study suggests that using palm oil mill effluent (POME) as a carbon source for biological hydrogen production can be improved through chemical pre-treatment. Among various chemical pre-treatments, phosphoric acid (H3PO4) showed the best results with the highest biohydrogen production and yield. Continuous fermentation under optimal conditions further increased biohydrogen production. Bacterial community analysis revealed the presence of specific bacteria involved in biohydrogen production in the continuous system.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Biotechnology & Applied Microbiology
Petra Patakova, Barbora Branska, Maryna Vasylkivska, Katerina Jureckova, Jana Musilova, Ivo Provaznik, Karel Sedlar
Summary: Solventogenic clostridia, although not a strictly defined group within the genus Clostridium, share common features such as being anaerobic, non-pathogenic, non-toxinogenic, and endospore forming bacteria. Their main metabolite is typically 1-butanol, but they can also produce other metabolites depending on species and culture conditions. Despite being used for industrial production in the past, they were replaced by more efficient chemical production methods. Transcriptome analysis is a valuable tool for gaining deeper insights into clostridial metabolism and life.
BIOTECHNOLOGY ADVANCES
(2022)
Article
Chemistry, Physical
Papasanee Muanruksa, James Winterburn, Pakawadee Kaewkannetra
Summary: A new method for producing biojet fuel or green kerosene from palm oil mill effluent was successfully developed in this study. By enzymatic hydrolysis and catalytic reaction, free fatty acids in the wastewater were converted into hydrocarbon fuels with a production efficiency of up to 94%.
Article
Agricultural Engineering
J. Iyyappan, B. Bharathiraja, Sunita Varjani, R. PraveenKumar, S. Muthu Kumar
Summary: In this study, microbial reduction of black strap molasses was performed using Clostridium acetobutylicum MTCC 11,274 to produce biobutanol. The significant parameters affecting butanol production were identified and optimal fermentation conditions were determined. The results showed that waste black strap molasses could be a promising substrate for the production of next generation biofuel.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Karlo Guerrero, Roberto Gallardo, Ivan Paredes, Julian Quintero, Silvia Mau, Raul Conejeros, Juan Carlos Gentina, German Aroca
Summary: The degenerated strain of Clostridium acetobutylicum obtained through continuous batch cultures showed potential for high hydrogen production in continuous culture, achieving good hydrogen yield and stability, providing an interesting alternative for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Sajjad Khudhur Abbas Al-Amshawee, Mohd Yusri Bin Mohd Yunus, Joan G. Lynam
Summary: The study found that both 15 mg/L and 30 mg/L ozone doses effectively dissolved non-biodegradable solids, enhancing toxicity removal, but the 15 mg/L dose was less effective. A higher ozone dose demonstrated better treatment performance and water quality.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Materials Science, Paper & Wood
Basirah Fauzi, Mohd Ghazali Mohd Nawawi, Roslinda Fauzi, Nurul Izzati Mohd Ismail, Siti Fatimah Mohd Noor, Izat Yahaya, Syazwan Hanani Meriam Suhaimy, Muhammad Sufi Roslan
Summary: A fermentation medium for the synthesis of butanol was designed, and it was found that the optimal glucose concentration for maximum growth and butanol production of Clostridium acetobutylicum was 60 g/L. Further increase in glucose content would deteriorate the performance of butanol production.
Article
Engineering, Environmental
Jing S. Chan, Mary Low, Phaik E. Poh, Leslie Y. Yeo, Ming K. Tan
Summary: The large quantities of palm oil mill effluent (POME) create a significant pollution problem. In this study, we demonstrate that the introduction of plasma and MHz-order sound waves can greatly reduce the treatment time and improve the removal of pollutants in POME. Plasma exposure enhances oxygen dissolution and organic compound dissolution, while sound waves promote convective mass transfer and bacterial decomposition. Combining plasma pretreatment and sound wave irradiation can lead to a fivefold reduction in the total treatment duration, making this hybrid technology promising for industrial-scale treatment systems.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Agricultural Engineering
Kuan Yeow Show, Eric Kian Vui Lo, Wee Shen Wong, Ji Yuan Lee, Yuegen Yan, Duu Jong Lee
Summary: This study explores an integrated scheme for treating high strength palm oil mill effluent, using anaerobic and aerobic reactors to achieve a remarkable COD removal rate of 99.7%. Evaluation shows that this scheme can not only reduce emissions and generate energy effectively, but also create significant revenue.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Mohd Hafez Mohd Isa, Nur Hashimah Shamsudin, Najeeb Kaid Nasser Al-Shorgani, Fahd Abdelhameed Alsharjabi, Mohd Sahaid Kalil
FOOD BIOTECHNOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Yusuf Nazir, Hafiy Halim, Pranesha Prabhakaran, Xiaojie Ren, Tahira Naz, Hassan Mohamed, Shaista Nosheen, Kiren Mustafa, Wu Yang, Aidil Abdul Hamid, Yuanda Song
Article
Agricultural Engineering
Peyman Abdeshahian, Jesus Jimenez Ascencio, Rafael R. Philippini, Felipe Antonio Fernandes Antunes, Julio Cesar dos Santos, Silvio Silverio da Silva
BIORESOURCE TECHNOLOGY
(2020)
Article
Environmental Sciences
Peyman Abdeshahian, Jesus Jimenez Ascencio, Rafael R. Philippini, Felipe Antonio Fernandes Antunes, Andre S. de Carvalho, Mojgan Abdeshahian, Julio Cesar dos Santos, Silvio Silverio da Silva
Summary: This review emphasizes the importance of agro-industrial wastes and lignocellulosic biomass as renewable resources for the production of glucans and biochemicals. It also provides a comprehensive overview of glucan sources, production methods, and waste utilization.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Energy & Fuels
Abdullah Bilal Ozturk, Najeeb Kaid Nasser Al-Shorgani, Shou Cheng, Tulin Arasoglu, Jale Gulen, Hiroaki Habaki, Ryuichi Egashira, Mohd Sahaid Kalil, Wan Mohtar Wan Yusoff, Jeffrey Scott Cross
Summary: This study evaluated the impact of steamed Japanese rice on butanol production through two-step fermentation. The results showed that the use of uneaten cooked rice as a potential source for liquid fuels is promising, with lower production costs under non-sterile and aerobic conditions suitable for industrial-scale production.
Article
Biotechnology & Applied Microbiology
Nurdiana Mokhtar, Lee Sin Chang, Yeanly Soon, Wan Aida Wan Mustapha, Noor-Soffalina Sofian-Seng, Hafeedza Abdul Rahman, Noorul Syuhada Mohd Razali, Shuwahida Shuib, Aidil Abdul Hamid, Seng Joe Lim
Summary: This study explored the use of different organic flocculants to harvest microalgae and extract docosahexaenoic acid-rich oil. It was found that cationic guar gum and gum arabic were optimal for cell harvesting, while okra gum led to higher phenolic compounds and bioactivities in the extracted oil. Overall, cationic guar gum produced the highest oil yield, while okra gum displayed enhanced phytochemical contents and bioactivities.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biochemical Research Methods
Nur Hanina Izzati Khairol Mokhtar, Ainulkhir Hussin, Aidil Abdul Hamid, Shahrul Hisham Zainal Ariffin, Muhammad Ashraf Shahidan
Summary: In this study, a high-throughput lectin assay was developed to investigate the interactions of lectins and sialic acid glycans. By optimizing the washing parameters and eliminating the use of blocking agents, high specific binding signals were achieved for the detection, and the optimal conditions for the PSA binding assay using Sambucus nigra agglutinin (SNA) were determined.
COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
(2022)
Article
Chemistry, Physical
Abudukeremu Kadier ab Junying Wang ab K. Chandrasekhar, Junying Wang, K. Chandrasekhar, Peyman Abdeshahian, M. Amirul Islam, Farshid Ghanbari, Mukul Bajpai, Surjit Singh Katoch, Prashant Basavaraj Bhagawati, Hui Li, Mohd Sahaid Kalil, Aidil Abdul Hamid, Hassimi Abu Hasan, Peng-Cheng Ma
Summary: Microbial electrolysis cells (MECs) are a new bio-electrochemical method used for hydrogen gas generation from palm oil mill effluent (POME). An empirical model was developed using response surface methodology (RSM), and a central composite design (CCD) was employed to optimize the experimental variables of incubation temperature, initial pH, and influent dilution rate. The results showed that these variables had a significant effect on maximum hydrogen production rate (HPR). The regression model predicted and validated the optimal conditions for maximum HPR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nutrition & Dietetics
Yusuf Nazir, Pranesha Phabakaran, Hafiy Halim, Hassan Mohamed, Tahira Naz, Aidil Abdul Hamid, Yuanda Song
Summary: This study successfully generated an Aurantiochytrium SW1 mutant with high tolerance to oxidative stress and high glucose-6 phosphate dehydrogenase (G6PDH) activities through plasma mutagenesis and chemical screening. The mutant showed a 30%, 65%, and 80% increase in overall biomass, lipid, and DHA production compared to the parental strains, respectively. Further analysis revealed that the superior traits of the mutant were attributed to higher G6PDH, oxidative defense enzymes, and key metabolic enzymes involved in lipid and DHA biosynthesis.
FRONTIERS IN NUTRITION
(2022)
Article
Engineering, Chemical
Fakhrony Sholahudin Rohman, Khairul Azly Zahan, Ashraf Azmi, Muhammad Faizuddin bin Roslan, Aidil Abdul Hamid, Noor Fazliani Binti Shoparwe
Summary: Fed-batch fermentation has the potential to increase DHA production, and optimizing the feeding strategy can maximize both DHA yield and economic benefits.
CHEMICAL ENGINEERING & TECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
F. S. Rohman, M. F. Roslan, D. Muhammad, N. F. Shoparwe, A. A. Hamid
Summary: This article discusses the use of optimal control in fermentation processes to optimize temperature and feed flowrate trajectories for the production of DHA. By solving the multi-objective optimal control problem, Pareto front solutions are obtained, with the epsilon-constraint technique being the most effective.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Shuwahida Shuib, Mohamed Yusuf Mohamed Nazir, Izyanti Ibrahim, Yuanda Song, Colin Ratledge, Aidil Abdul Hamid
Summary: This study confirms the existence of two separate and distinct lipogenic metabolons in the thraustochytrid, Aurantiochytrium SW1, and reveals the important role of metabolons in lipid biosynthesis pathways.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS
(2022)
Article
Genetics & Heredity
Pranesha Prabhakaran, Nachon Raethong, Yusuf Nazir, Hafiy Halim, Wu Yang, Wanwipa Vongsangnak, Aidil Abdul Hamid, Yuanda Song
Summary: In this study, genomic characterization of Aurantiochytrium sp. SW1, a potential producer of docosahexaenoic acid (DHA), was carried out. The results reveal the genome information and metabolic pathways related to DHA synthesis in this strain. It is found that Aurantiochytrium sp. SW1 has the potential for high DHA production, and several key genes and enzymes involved in lipid metabolism and fatty acid biosynthesis pathways are identified.
Article
Multidisciplinary Sciences
Vidyah Manikan, Yusuf Nazir, Aidil Abdul Hamid
Summary: Fructose has a significant positive effect on DHA content in Thraustochytrids, with a less profound impact on DHA biosynthetic capacity. When cultivated in fructose medium, Thraustochytrid species exhibit a slower growth rate but higher biomass and lipid accumulation compared to glucose medium after 48 hours.
Article
Biochemistry & Molecular Biology
Tayebeh Fooladi, Mohammad Reza Soudi, Seyed Mahmoud Hashemi, Felipe Antonio Fernandes Antunes, Peyman Abdeshahian
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2020)