Review
Biochemistry & Molecular Biology
Aishwarya Pandey, Ndao Adama, Kokou Adjalle, Jean-Francois Blais
Summary: PHA is a biodegradable and environmentally friendly biopolymer that has gained significant attention and application in various industries. The research on its biocompatibility and biodegradability in vivo and in vitro has been extensively conducted. Microbial-synthesized PHAs have been widely used as biodegradable plastics in packaging, medical devices, and molded goods.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Energy & Fuels
Tulin Yilmaz Nayir, Havva Nur Ciftci, Selver Konuk, Berfin Kucuk, Yusuf Kucukaga, Serdar Kara
Summary: Polyhydroxyalkanoates (PHAs) are widely studied biopolymers produced by microorganisms, with potential as a waste valorization product. High production efficiency is achieved in pure culture and synthetic medium processes, while mixed microbial culture and waste streams result in lower yields.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Engineering, Environmental
Ruizhe Pei, Gerard Vicente-Venegas, Agnieszka Tomaszewska-Porada, Mark C. M. Van Loosdrecht, Robbert Kleerebezem, Alan Werker
Summary: Polyhydroxyalkanoates (PHAs) can be produced from municipal waste activated sludge, but their distribution within microbial communities is limited. A selective staining method was developed to visualize the distribution of PHA storage activity and revealed that only a small fraction of the biomass was engaged in PHA accumulation. Optimized staining methods provided high acuity for imaging of PHA distribution and allowed for the distinction of different morphotypes within the biomass. These findings have important implications for PHA recovery methods and provide valuable insights for improving activated sludge processes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Shivananda Behera, Monika Priyadarshanee, Vandana, Surajit Das
Summary: The rising plastic pollution has negative impacts on the environment due to the non-biodegradable nature of petroleum-based plastics. Polyhydroxyalkanoates (PHAs) offer a sustainable and eco-friendly alternative as they can be synthesized using various microorganisms and possess enhanced biodegradability and other useful properties. This review provides an overview of the synthesis mechanism, properties, and applications of microbially synthesized PHAs, as well as discussing the classification, detection techniques, genetic regulation, and industrial production of these biopolymers.
Article
Polymer Science
Ramin Hosseinnezhad, Dhanumalayan Elumalai, Iurii Vozniak
Summary: This research investigates the initiation and progression of crazing in all-biopolymeric blends based on Polyhydroxyalkanoates (PHAs) using an in situ SEM method. The study found that the plastic deformation mechanism changed from single craze-cracking to homogeneous and heterogeneous intensified crazing for PHB and PHBHV matrices, respectively. The strength and time to failure of crazes increased with the addition of minor phase fibers.
Review
Environmental Sciences
Dhara Patel, Dhruv Mamtora, Anushree Kamath, Arpit Shukla
Summary: Plastic waste poses a threat to the environment and marine life, and researchers have focused on the phenomenon of biodegradation and identified bacteria that can carry out this process.
MARINE POLLUTION BULLETIN
(2022)
Review
Biochemistry & Molecular Biology
Bibi Nausheen Jaffur, Gopalakrishnan Kumar, Pratima Jeetah, Seeram Ramakrishna, Shashi Kant Bhatia
Summary: The current processes for producing PHAs are costly, but recent advances in functionalizing PHAs from waste streams offer opportunities for fostering a circular economy and waste reduction. This study focuses on developing sustainable and efficient methods, such as bioprocess engineering, catalysts, and materials science.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Environmental Sciences
Yasser Vasseghian, Elena-Niculina Dragoi, Fares Almomani, Van Thuan Le
Summary: The research and technological advancements in the field of nanotechnology have led to significant application developments, particularly in the use of graphene-based materials (GBMs) as fillers in the bioplastic industry. While efforts have been mainly focused on materials development and energy consumption minimization, attention must also be given to the characterization of potential toxicological and environmental impacts.
Article
Agricultural Engineering
Krishna Gautam, Reena Vishvakarma, Poonam Sharma, Amarnath Singh, Vivek Kumar Gaur, Sunita Varjani, Janmejai Kumar Srivastava
Summary: This review thoroughly investigates the challenges and advancements in the use of waste food for the production of biopolymers, with a focus on the chemical, microbial, and enzymatic processes involved.
BIORESOURCE TECHNOLOGY
(2022)
Article
Microbiology
Paton Vuong, Daniel J. Lim, Daniel V. Murphy, Michael J. Wise, Andrew S. Whiteley, Parwinder Kaur
Summary: By mining global genome repositories for PhaC enzymes, potential PHA-producing bacteria and archaea were identified, including those from unique environmental niches that could enhance PHA production. This in silico study provides valuable insights for future bioprospecting efforts aimed at diversifying and improving PHA production systems.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Polymer Science
Evelyn Herrera-Ibarra, Mercedes Salazar-Hernandez, Alfonso Talavera-Lopez, O. J. Solis-Marcial, Rosa Hernandez-Soto, Jose P. Ruelas-Leyva, Jose A. Hernandez
Summary: This research focuses on the fabrication of biopolymers using nopal mucilage (NM) as a natural resource. By varying the concentration of plasticizers (sorbitol and cellulose) and using corn starch (CS) and potato starch (PS) as sources, a surgical thread was obtained. The biopolymers made with NM showed high solubility and resistance to solvent degradation. The resulting thread had a uniform diameter, good elasticity, and low capillarity compared to other prototypes reported in the literature.
Article
Agricultural Engineering
Rijuta Ganesh Saratale, Si-Kyung Cho, Ganesh Dattatraya Saratale, Avinash A. Kadam, Gajanan S. Ghodake, Manu Kumar, Ram Naresh Bharagava, Gopalakrishnan Kumar, Dong Su Kim, Sikandar Mulla, Han Seung Shin
Summary: Polyhydroxyalkanoates (PHA) are considered as a promising alternative to replace synthetic plastics due to their comparable properties, and this review gives a comprehensive overview of current research focusing on the production of PHA from waste fluxes, providing insights for future research directions.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Meghna R. Malik, Nii Patterson, Nirmala Sharma, Jihong Tang, Claire Burkitt, Yuanyuan Ji, Matthew Martino, Andrew Hertig, Dirk Schweitzer, Oliver Peoples, Kristi D. Snell
Summary: Plant-based production of polyhydroxyalkanoates (PHAs) and seed oil can provide a sustainable source of feedstocks for renewable fuels and plastics. This study successfully engineered Camelina sativa to produce PHA poly[(R)-3-hydroxybutyrate] (PHB) in the seed cytosol using a bacterial PHB biosynthetic pathway. By localizing the key enzymes to the cytosol and endoplasmic reticulum, stable polymer production was achieved with PHB levels reaching 10.2% of seed weight. This research represents a significant advancement towards commercial use of plant-based PHAs, connecting large-scale agricultural production with the plastics and renewable fuels markets.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Microbiology
Athraa Alsaadi, Sree Selva Kumar Ganesen, Tan Suet May Amelia, Radwa Moanis, Eveline Peeters, Sevakumaran Vigneswari, Kesaven Bhubalan
Summary: Researchers have isolated and identified PHA-producing strains from sponge and sediment samples using cultivation and non-cultivation approaches. It was found that one strain showed previously unreported PHA-producing ability, and another strain showed the ability to synthesize 3-hydroxybutyrate without precursor addition.
Article
Energy & Fuels
Alessandra Oliveira da Silva, Farayde Matta Fakhoury, Gustavo Graciano Fonseca
Summary: This study developed films based on pequi pulp and gelatin, with the addition of glycerol or sorbitol as plasticizers. The films exhibited good appearance and easy handling, with a yellowish color. The addition of plasticizers influenced the elongation and tensile strength of the films. The films also showed desirable thermal characteristics for packaging applications. In addition, they exhibited significant biodegradation in different soils within a short time period. Overall, the films are recommended for food packaging applications.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Green & Sustainable Science & Technology
Youwei Cui, He Su, Yefei Chen, Yongbao Chen, Yongzhen Peng
CLEAN-SOIL AIR WATER
(2015)
Article
Engineering, Chemical
Cui Youwei, Wang Shuying, Li Jing
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2009)
Article
Green & Sustainable Science & Technology
Youwei Cui, Changyao Peng, Yongzhen Peng, Liu Ye
CLEAN-SOIL AIR WATER
(2009)
Article
Environmental Sciences
Y. W. Cui, J. R. Ding, S. Y. Ji, Y. Z. Peng
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2014)
Article
Environmental Sciences
Peng Yongzhen, Hou Hongxun, Wang Shuying, Cui Youwei, Zhiguo Yuan
JOURNAL OF ENVIRONMENTAL SCIENCES
(2008)
Article
Multidisciplinary Sciences
You-Wei Cui, Jie Li, Zhao-Fu Du, Yong-Zhen Peng
Article
Multidisciplinary Sciences
You-Wei Cui, Hong-Yu Zhang, Jie-Ran Ding, Yong-Zhen Peng
SCIENTIFIC REPORTS
(2016)
Article
Multidisciplinary Sciences
You-Wei Cui, Hong-Yu Zhang, Peng-Fei Lu, Yong-Zhen Peng
SCIENTIFIC REPORTS
(2016)
Article
Engineering, Environmental
Y. W. Cui, Y. Z. Pang, C. Y. Peng, X. Q. Gan, L. Ye
WATER SCIENCE AND TECHNOLOGY
(2006)
Article
Engineering, Environmental
YZ Peng, GB Zhu, SY Wang, DS Yu, YW Cui, XS Meng
WATER SCIENCE AND TECHNOLOGY
(2005)
Article
Environmental Sciences
YW Cui, YZ Peng, XQ Gan, L Ye, YY Wang
JOURNAL OF ENVIRONMENTAL SCIENCES
(2005)
Article
Engineering, Environmental
YZ Peng, Y Chen, CY Peng, M Liu, SY Wang, XQ Song, YW Cui
WATER SCIENCE AND TECHNOLOGY
(2004)