Article
Food Science & Technology
J. Y. Mendez-Carmona, Karen N. Ramirez-Guzman, Juan A. Ascacio-Valdes, Leonardo Sepulveda, Cristobal N. Aguilar
Summary: In this study, solid-state fermentation with Aspergillus niger GH1 was used to extract and recover carotenoids from tomato waste. The optimal conditions for the process were determined, and the results showed a significant increase in the carotenoid content after 36 hours of fermentation. This approach has potential applications in carotenoid extraction and recovery.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2022)
Article
Multidisciplinary Sciences
Heidi Schalchli, Emilio Hormazabal, Alvaro Astudillo, Gabriela Briceno, Olga Rubilar, Maria Cristina Diez
Summary: This study successfully utilized potato waste as a sole substrate to produce antifungals and biopigments using Streptomyces. The strain SO6 showed outstanding abilities in antifungal and biopigment production, along with a potential for diverse enzyme secretion and bioconversion of sugars.
Article
Agronomy
Peng Jiao, Wen-Ya Yuan, Han-Dan Zhao, Jing Qu, Pi-Wu Wang, Shu-Yan Guan, Yi-Yong Ma
Summary: The study showed that the insertion of phytase gene increased the phytase activity in transgenic plant roots, reduced organic phosphorus content in the rhizosphere, increased maize seed weight, improved plant growth status, and enhanced seed yield.
GENETIC RESOURCES AND CROP EVOLUTION
(2021)
Article
Chemistry, Physical
Canto-Robertos Manuel, Quintal-Franco Carlos, Ponce-Caballero Carmen, Vega-De Lille Marisela, Moreno-Andrade Ivan
Summary: The dark fermentation process for biohydrogen production from food waste through fungal solid-state fermentation (SSF) was evaluated. The results showed that Aspergillus tubingensis was the best hydrolysis culture, and the hydrogen yield of food waste hydrolysate (FWH) at different substrate-inoculum ratios was lower than that of untreated food waste (RFW). The microbial community analysis revealed the presence of lactic-acid bacteria genera such as Latilactobacillus and Leuconostoc. The presence of actively growing bacteria during SSF could explain the lower hydrogen yield in the FWH treatment.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biotechnology & Applied Microbiology
Su Jeong Lee, Han Byul Kang, Sun Hee Kim, Woo Soo Jeong, So-Yeong Kim, Soo-Hwan Yeo
Summary: The implementation of the 'Nagoya Protocol' has incentivized efforts to secure useful biological resources globally, including the generation of royalties on the use of foreign-made inoculum strains or starters. In this study, the importance of securing useful strains in Korea was recognized, and starters were produced using specific fungi strains. The analysis focused on the quality characteristics of the starters, such as enzyme activity and flavor compound content, under different inoculum concentrations and drying conditions, aiming to provide foundational data for the production of Korean-type starters.
FERMENTATION-BASEL
(2023)
Article
Multidisciplinary Sciences
Shahzad Mahmood, Memuna G. Shahid, Muhammad Nadeem, Rubina Nelofer, Muhammad Irfan
Summary: The research aimed to improve phytase production by genetically altering Aspergillus niger using solid state fermentation. Mutagenesis induced by UV irradiation and EMS treatments resulted in the development of a superior strain designated as UV-3 mutant, which exhibited a larger zone of hydrolysis and higher enzyme activity compared to the wild strain. The application of the mutant strain increased body weight gain in broiler chickens, demonstrating the potential for enhanced and cost-effective phytase production for various industrial purposes.
KUWAIT JOURNAL OF SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Natsumi Ichikawa, Li Shiuan Ng, Saneyuki Makino, Luo Lin Goh, Yun Jia Lim, Ferdinandus, Hiroyuki Sasaki, Shigenobu Shibata, Chi-Lik Ken Lee
Summary: This study found that fermentation of okara with koji starter can release its untapped nutrients. Supplementation with fermented okara in high-fat diets improved lipid metabolism in mice, reducing body weight gain, adipose tissue weight, serum triglyceride levels, and liver lipid accumulation.
Article
Energy & Fuels
Zahra Azzouz, Azzeddine Bettache, Ibtissem Djinni, Nawel Boucherba, Said Benallaoua
Summary: In this study, xylanase production from Aspergillus niger strain BG was achieved through solid-state fermentation. The effects of various factors on xylanase production were optimized using the OFAT and RSM methods. The optimum conditions for maximum xylanase production were determined using mathematical models and analysis of variance.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Food Science & Technology
Maria-Rocio Meini, Ignacio Cabezudo, Cecilia S. Galetto, Diana Romanini
Summary: Solid-state fermentation by filamentous fungi like Aspergillus niger and Aspergillus oryzae can facilitate the extraction of polyphenols from grape pomace, leading to extracts with antioxidant and prebiotic properties.
Article
Biochemistry & Molecular Biology
Muge Canatar, Hilal Nur Gurler Tufan, Selime Benemir Erkan Unsal, Cansu Yilmazer Koc, Ali Ozcan, Gokce Kucuk, Selin Basmak, Ercan Yatmaz, Mustafa Germec, Ibrahim Yavuz, Irfan Turhan
Summary: This study aimed to produce inulinase and fructooligosaccharides (FOSs) from carob using solid-state fermentation (SSF) conditions. The maximum inulinase and specific inulinase activities were 249.98 U/mL and 318.29 U/mg protein, respectively. The results also showed that the maximum total FOS amount produced was 28,712.70 ppm.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Energy & Fuels
Satya Ranjan Das, Nitai Basak
Summary: Potato waste can be effectively used as a substrate for hydrogen production through combined dark and photo fermentation, with optimized conditions leading to a high hydrogen yield.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Food Science & Technology
Pedro Aguilar-Zarate, Gerardo Gutierrez-Sanchez, Mariela R. Michel, Carl W. Bergmann, Jose J. Buenrostro-Figueroa, Juan A. Ascacio-Valdes, Juan C. Contreras-Esquivel, Cristobal N. Aguilar
Summary: This study purifies an enzyme capable of degrading punicalagin. The enzyme is produced by Aspergillus niger GH1 through solid-state fermentation, induced by ellagitannins as the sole carbon source. Purification steps include lyophilization, desalting, anionic exchange, and gel filtration chromatography. The enzyme's kinetic constants were calculated using punicalagin, methyl gallate, and sugar beet arabinans.
Article
Energy & Fuels
Getachew Alemu Tenkolu, Kumsa Delessa Kuffi, Gadissa Tokuma Gindaba
Summary: This study optimized the fermentation conditions for bioethanol production from waste potatoes and characterized the produced bioethanol. The results showed that the optimal fermentation temperature is 32.2 degrees C, pH is 4.07, and incubation time is 72.1 hours, which resulted in a maximum ethanol yield of 34.5% (v/v).
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Microbiology
Gheorghe-Adrian Martau, Peter Unger, Roland Schneider, Joachim Venus, Dan Cristian Vodnar, Jose Pablo Lopez-Gomez
Summary: Solid state fermentation (SsF) is an effective method for enzyme production using organic residues. This study demonstrated the feasibility of using enzymes produced via SsF for subsequent hydrolysis and production of target compounds through submerged-liquid fermentations (SmF). The combination of SsF and SmF technologies showed promising results in valorizing wheat bran and organic fraction of municipal solid waste.
Article
Agriculture, Dairy & Animal Science
Chung Ming Huang, Wen Yang Chuang, Wei Chih Lin, Li Jen Lin, Sheng Chang Chang, Tzu Tai Lee
Summary: The co-fermentation of wheat bran with Aspergillus oryzae and phytase improved phosphorus and fiber utilization in laying hens, enhanced antioxidant capacity, and decreased excreta phosphorus content. Birds fed with 10% PCFWH had better egg quality, antioxidant status, and reduced excreta phosphorus compared to control.
Article
Biotechnology & Applied Microbiology
Mofizul Islam, Qiuyan Yuan
Article
Environmental Sciences
J. Juanga-Labayen, K. Yanac, Q. Yuan
Summary: This study evaluated the impact of different SIR values on the batch anaerobic digestion of cotton textile waste, and found that treated substrate showed higher methane yield and anaerobic degradability compared to untreated substrate. The Gompertz model fitted well with the experimental data, with an R2 value of 0.96-0.99, showing improvement over the first-order kinetic model.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Monika Niemczyk, Parvin Berenjkar, Nicole Wilkinson, Stan Lozecznik, Richard Sparling, Qiuyan Yuan
Summary: This study evaluated the efficacy of yard waste and leaf compost (YWLC) and biosolids compost (BSC) as bio-based landfill cover materials for oxidizing methane (CH4), finding that optimal results were achieved with mixing ratios of 1:1 and 1:4 between the two composts.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Review
Green & Sustainable Science & Technology
Parvin Berenjkar, Yu Yan Li, Qiuyan Yuan
Summary: The complexity of waste management systems due to different waste management practices makes them difficult to analyze, but the System Dynamics approach helps in conceptualizing and evaluating these systems. By studying waste management practices in various countries, strategies can be developed to achieve goals such as expanding landfill life span and mitigating global warming. Increasing waste reduction, source separation, and recycling rates can decrease environmental impact, but may not always be economically profitable. Incentives for waste separation and knowledge about waste management consistently have a positive impact on the entire system.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Article
Environmental Sciences
Vanja Karpisek, Md Tanvir Hasnine, Nazim Cicek, Qiuyan Yuan
Summary: This study focuses on the role of passive wastewater treatment (wastewater lagoon plus wetland) in reducing phosphorus discharge levels in a small community in Manitoba, Canada. The research found that the natural wetland treatment achieved an average total phosphorus reduction of over 70% during the vegetation growing season, meeting the regulatory requirement of phosphorus discharge concentration below 1 mg/L. This study demonstrates the potential of natural wetland treatment as an effluent polishing step in cold continental climate conditions.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Jeanger P. Juanga-Labayen, Qiuyan Yuan
Summary: This study investigated the efficacy of using discarded textile and paper waste to form sheets with optimum tensile strength. The research optimized tensile strength by studying the effects of alkali treatment, compressive loads, and binding agents. The results demonstrated significant increases in tensile strength for cotton and newspaper sheets, suggesting potential applications for developing biodegradable seedling pots.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Jeanger P. Juanga-Labayen, Qiuyan Yuan
Summary: This study demonstrates the efficacy of utilizing textile waste and paper waste to develop biodegradable seedling pots with desirable strength, biodegradability, and seed germination rate. The untreated blends of cotton and polycotton pots showed comparable optimum strength compared to commercial pots.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Parvin Berenjkar, Richard Sparling, Stan Lozecznik, Qiuyan Yuan
Summary: A pilot biowindow was constructed in a Canadian Landfill with high seasonal temperature fluctuations. Methane (CH4) oxidation efficiency was affected by temperature and moisture content (MC) fluctuations in the compost layer, but adjusting the moisture content in the compost mixture can maintain a high methane oxidation rate.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Ayaobu Tolofari, Theresa Adesanya, Francis Zvomuya, Qiuyan Yuan
Summary: The results of this study show that Al-P sludge performs just as effectively as the commercial fertilizer MAP in providing enough phosphorus for maize growth. This means that Al-P sludge could serve as an alternative source of phosphorus, particularly for growing maize as feedstock for bioenergy.
Article
Agronomy
Reza Salehi, Qiuyan Yuan, Sumate Chaiprapat
Summary: In this study, two data-driven models, k-nearest neighbours (k-NN) and support vector machine (SVM), were proposed to predict biogas production from anaerobic digestion. The results showed that the Gaussian-based SVM model performed slightly better than the k-NN model in predicting biogas production. These findings suggest that SVM modeling is a reliable technique for predicting biogas production in anaerobic digestion processes.
Article
Engineering, Chemical
Elsayed Mady, Jan Oleszkiewicz, Qiuyan Yuan
Summary: This study investigated the feasibility of applying an anaerobic step-feeding strategy to enhance the performance of granular sequencing batch reactors (GSBRs) in terms of operational stability of the cultivated mature granules and nutrient removal efficiencies. The results showed that operating GSBRs under the effect of fast single feeding mode followed by anaerobic mixing favors stable long-term granule stability.
Article
Environmental Sciences
Tanvir Hasnine, Elisabeth Cuervo Lumbaque, Qiuyan Yuan
Summary: This study investigated the electrooxidation of mature landfill leachate from the Brady Road Resource Management Facility in Winnipeg, Canada. Using boron-doped diamond electrodes, the researchers determined the optimal process parameters using response surface methodology. The results showed that at a pH of 8 and a current density of 125 mA/cm(2), the removal percentages for COD, color, ammonium, and phosphate in the leachate were 95.47%, 80.27%, 71.15%, and 47.15% respectively.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Parvin Berenjkar, Richard Sparling, Stan Lozecznik, Qiuyan Yuan
Summary: This study investigated the interactive effects of environmental factors on methane oxidation in an active bio-cover. Moisture content, temperature, and initial CH4 concentration were found to have the most significant control on methane oxidation. A statistical model was developed to determine the optimal conditions, and experimental validation was conducted.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Biotechnology & Applied Microbiology
Pradeep Thapa, Md Tanvir Hasnine, Ali Zoungrana, Sandeep Thakur, Qiuyan Yuan
Summary: Forty percent of food generated in Canada is wasted, leading to significant environmental issues. Composting has been found to be an effective solution to reduce carbon footprint and greenhouse gas emissions.
FERMENTATION-BASEL
(2022)
Article
Green & Sustainable Science & Technology
Vijaypal Singh, Jordan Wyatt, Ali Zoungrana, Qiuyan Yuan
Summary: This study investigated the effects of post-consumer cotton textile waste on the composting process through a combination of pre-composting and vermicomposting. The results showed that the addition of post-consumer cotton textile waste did not affect the vermicomposting process and was successfully utilized as a carbon source by worms to produce healthy and mature compost.
