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Saleh AK, Ray JB, El-Sayed MH, Alalawy AI, Omer N, Abdelaziz MA, Abouzeid R. Functionalization of bacterial cellulose: Exploring diverse applications and biomedical innovations: A review. Int J Biol Macromol 2024; 264:130454. [PMID: 38417758 DOI: 10.1016/j.ijbiomac.2024.130454] [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: 01/02/2024] [Revised: 02/05/2024] [Accepted: 02/24/2024] [Indexed: 03/01/2024]
Abstract
The demand for the functionalization of additive materials based on bacterial cellulose (BC) is currently high due to their potential applications across various sectors. The preparation of BC-based additive materials typically involves two approaches: in situ and ex situ. In situ modifications entail the incorporation of additive materials, such as soluble and dispersed substances, which are non-toxic and not essential for bacterial cell growth during the production process. However, these materials can impact the yield and self-assembly of BC. In contrast, ex situ modification occurs subsequent to the formation of BC, where the additive materials are not only adsorbed on the surface but also impregnated into the BC pellicle, while the BC slurry was homogenized with other additive materials and gelling agents to create composite films using the casting method. This review will primarily focus on the in situ and ex situ functionalization of BC then sheds light on the pivotal role of functionalized BC in advancing biomedical technologies, wound healing, tissue engineering, drug delivery, bone regeneration, and biosensors.
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Affiliation(s)
- Ahmed K Saleh
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622 Giza, Egypt.
| | - Julie Basu Ray
- Department of Health Sciences, Christian Brothers University, Memphis, TN, USA
| | - Mohamed H El-Sayed
- Department of Biology, College of Science and Arts, Northern Border University, Arar, Saudi Arabia
| | - Adel I Alalawy
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Noha Omer
- Department of chemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Mahmoud A Abdelaziz
- Department of chemistry, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Ragab Abouzeid
- Cellulose and Paper Department, National Research Centre, 33 El-Bohouth St., Dokki, P.O. 12622 Giza, Egypt; School of Renewable Natural Resources, Louisiana State University, Baton Rouge, LA 70803, USA.
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Xia H, Yu B, Yang Y, Wan Y, Zou L, Peng L, Lu L, Ren Y. The Quality Evaluation of Highland Barley and Its Suitability for Chinese Traditional Tsampa Processing. Foods 2024; 13:613. [PMID: 38397590 PMCID: PMC10887829 DOI: 10.3390/foods13040613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 01/26/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
The physicochemical traits of highland barley prominently affect the quality of Tsampa. To find out the relevance between the physicochemical properties of raw material and the texture parameters of processed products, twenty-five physicochemical traits and ten quality parameters for seventy-six varieties of highland barley were measured and analyzed. The results showed that there was a significant difference between the physicochemical indexes for highland barleys of various colors. The dark highland barley generally has more fat, protein, total dietary fiber, phenolic, Mg, K, Ca, and Zn and less amylose, Fe, Cu, and Mo than light colored barley. Then, these highland barleys were made into Tsampa. A comprehensive quality evaluation model based on the color and texture parameters of Tsampa was established through principal component analysis. Then, cluster analysis was used to classify the tested samples into three edible quality grades predicated on the above evaluation model. At last, the regression analysis was applied to establish a Tsampa quality predictive model according to the physicochemical traits of the raw material. The results showed that amylose, protein, β-Glucan, and a* and b* could be used to predict the comprehensive quality of Tsampa. The predicted results indicated that 11 of 14 validated samples were consistent with the actual quality, and the accuracy was above 78.57%. Our study built the approach of the appropriate processing varieties evaluation. It may provide reference for processing specific highland barley.
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Affiliation(s)
| | | | | | | | | | | | | | - Yuanhang Ren
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Sichuan Engineering and Technology Research Center of Coarse Cereal Industralization, College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
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Sun M, Li D, Xi Y, Qin X, Liao Y, Liu X, Jia S, Xie Y, Zhong C. NIR-triggered bacterial cellulose-based wound dressings for multiple synergistic therapy of infected wound. Int J Biol Macromol 2024; 259:129033. [PMID: 38176505 DOI: 10.1016/j.ijbiomac.2023.129033] [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: 07/24/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/06/2024]
Abstract
Skin wounds are repaired by a complex series of events and overlapping phases in which bacterial infection and insufficient angiogenesis at the wound site delay the healing process. Thus, functional wound dressings with enhanced antibacterial activity and angiogenic capacity have attracted attention. Herein, bacterial cellulose (BC)-based dressings were successfully fabricated by functionalization with a polydopamine (PDA) coating and copper sulfide nanoparticles (CuS NPs). Under 808 nm laser illumination, the BC/PDA/CuS composite membranes exhibited outstanding adjustable photothermal and photodynamic activities as well as controlled Cu2+ release, endowing the composite membranes with synergetic antibacterial activity. Specially, a bactericidal efficiency of 99.7 % and 88.0 % for Staphylococcus aureus and Escherichia coli was achieved after treatment with BC/PDA/CuS5 sample under NIR irradiation (0.8 W/cm2, 10 min), respectively. Moreover, the BC/PDA/CuS5 composite membrane could enhance the angiogenesis due to the released Cu2+. In vivo experiments revealed that the BC/PDA/CuS5 composite membrane dressing could accelerate the wound closure process of the full-thickness skin defects with S. aureus by synergistically reducing inflammation, enhancing collagen deposition, and promoting vascularization under NIR irradiation. Additionally, the BC/PDA/CuS5 composite membrane exhibited high biocompatibility and biosafety. This work offers a new strategy to prepare multifunctional BC-based dressing for clinical wound healing.
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Affiliation(s)
- Meiyan Sun
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Dongmei Li
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Yan Xi
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Xiaotong Qin
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Yuting Liao
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Xiaozhi Liu
- Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, Tianjin, PR China
| | - Shiru Jia
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China
| | - Yanyan Xie
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China.
| | - Cheng Zhong
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, PR China; Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, PR China.
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Wu Y, Liu YL, Jia HP, Chen KH, Wu FF, Gao J, Hu Y, Chen Y, Huang C. Effect of in-situ biochemical modification on the synthesis, structure, and function of xanthan gum based bacterial cellulose generated from Tieguanyin oolong tea residue hydrolysate. Food Chem 2024; 432:137133. [PMID: 37633139 DOI: 10.1016/j.foodchem.2023.137133] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 08/28/2023]
Abstract
The effect of in-situ biochemical modification on the synthesis, structure, and function of xanthan gum based bacterial cellulose generated from Tieguanyin oolong tea residue hydrolysate was evaluated for the first time. This modification could overcome the inhibitory effect of the hydrolysate and the bacterial cellulose yield with 0.6% xanthan gum addition increased by 260.8% compared with that without xanthan gum addition. Bacterial cellulose and xanthan gum were combined by the in-situ modification and the alteration of fermentation medium rheological properties by xanthan gum addition might be beneficial for their combination. The average diameter of the bacterial cellulose microfibrils was increased by the modification, and it had a great influence on the crystalline structure of the bacterial cellulose. Additionally, both the water absorption and texture properties of the bacterial cellulose was strengthened by the modification. Overall, this modification showed great potential for efficient and effective xanthan gum based bacterial cellulose production.
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Affiliation(s)
- Yi Wu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yang-Ling Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Huai-Peng Jia
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Kang-Hui Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Fang-Fang Wu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Jing Gao
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yong Hu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yun Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
| | - Chao Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
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Jia HP, Wang XL, Liu ZW, Wu Y, Gao J, Hu Y, Chen Y, Huang C. Bacterial cellulose/gum Arabic composite production by in-situ modification from lavender residue hydrolysate. Int J Biol Macromol 2023; 253:126961. [PMID: 37722637 DOI: 10.1016/j.ijbiomac.2023.126961] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
In this study, bacterial cellulose/gum Arabic composite (BC/GA) was synthesized by in-situ modification from lavender residue hydrolysate for the first time. The in-situ modification with GA adding showed great beneficial effect for BC/GA synthesis. Both the product (BC or BC/GA) yield and the product (BC or BC/GA) production per sugars consumption increased greatly by the in-situ modification when compared with the fermentation without GA adding (2.90 g/L vs. 0.91 g/L, and 0.461 g/g vs. 0.138 g/g). It is hypothesized that the combination of BC and GA is the main mechanism for the beneficial effect of the in-situ modification, and the scanning electron microscope (SEM) images confirmed this hypothesis. GA adding showed little effect on the rheological properties of lavender residue hydrolysate, and this environment was suitable for the combination of BC and GA. The in-situ modification had an obvious influence on the crystallinity index and the thermal stability of BC/GA, but affected little on its functional groups and cellulose structural framework. Besides BC/GA synthesis and structure, the in-situ modification could also alter the texture properties of BC/GA. Overall, this study can offer some useful information for the biochemical conversion from green and cost-effective lavender residue hydrolysate to attractive biomaterial BC/GA.
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Affiliation(s)
- Huai-Peng Jia
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Xiao-Lin Wang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Zhuo-Wei Liu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Yi Wu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China
| | - Jing Gao
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yong Hu
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China
| | - Yun Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
| | - Chao Huang
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan 528458, People's Republic of China; GDPU-HKU Zhongshan Biomedical Innovation Platform, Zhongshan 528437, People's Republic of China.
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Wang F, Sun M, Li D, Qin X, Liao Y, Liu X, Jia S, Xie Y, Zhong C. Multifunctional Asymmetric Bacterial Cellulose Membrane with Enhanced Anti-Bacterial and Anti-Inflammatory Activities for Promoting Infected Wound Healing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303591. [PMID: 37568253 DOI: 10.1002/smll.202303591] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/05/2023] [Indexed: 08/13/2023]
Abstract
An asymmetric wound dressing acts as a skin-like structure serves as a protective barrier between a wound and its surroundings. It allows for the absorption of tissue fluids and the release of active substances at the wound site, thus speeding up the healing process. However, the production of such wound dressings requires the acquisition of specialized tools, expensive polymers, and solvents that contain harmful byproducts. In this study, an asymmetric bacterial cellulose (ABC) wound dressing using starch as a porogen has been developed. By incorporating silver-metal organic frameworks (Ag-MOF) and curcumin into the ABC membrane, the wound dressing gains antioxidant, reactive oxygen species (ROS) scavenging, and anti-bacterial activities. Compared to BC-based wound dressings, this dressing promotes efficient dissolution and controlled release of curcumin and silver ions. In a full-thickness skin defect model, wound dressing not only inhibits the growth of bacteria on infected wounds but also regulates the release of curcumin to reduce inflammation and promote the production of epithelium, blood vessels, and collagen. Consequently, this dressing provides superior wound treatment compared to BC-based dressing.
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Affiliation(s)
- Fengping Wang
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
- College of Traditional Chinese Medicine, Weifang Medical University, Weifang, Shandong, P. R. China
| | - Meiyan Sun
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Dongmei Li
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Xiaotong Qin
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Yuting Liao
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Xiaozhi Liu
- Tianjin Key Laboratory of Epigenetics for Organ Development in Preterm Infants, Tianjin, P. R. China
| | - Shiru Jia
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Yanyan Xie
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
| | - Cheng Zhong
- State Key Laboratory of Food Nutrition & Safety, Tianjin University of Science and Technology, Tianjin, P. R. China
- Key Laboratory of Industrial Fermentation Microbiology, (Ministry of Education), Tianjin University of Science and Technology, Tianjin, P. R. China
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Nguyen NN, Tran TTV, Nguyen QD, Nguyen TP, Lien TN. Modification of microstructure and selected physicochemical properties of bacterial cellulose produced by bacterial isolate using hydrocolloid-fortified Hestrin-Schramm medium. Biotechnol Prog 2023; 39:e3344. [PMID: 37025043 DOI: 10.1002/btpr.3344] [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: 11/21/2022] [Revised: 03/12/2023] [Accepted: 03/25/2023] [Indexed: 04/08/2023]
Abstract
Bacterial cellulose (BC) is a biopolymer with applications in numerous industries such as food and pharmaceutical sectors. In this study, various hydrocolloids including modified starches (oxidized starch-1404 and hydroxypropyl starch-1440), locust bean gum, xanthan gum (XG), guar gum, and carboxymethyl cellulose were added to the Hestrin-Schramm medium to improve the production performance and microstructure of BC by Gluconacetobacter entanii isolated from coconut water. After 14-day fermentation, medium supplemented with 0.1% carboxymethyl cellulose and 0.1% XG resulted in the highest BC yield with dry BC content of 9.82 and 6.06 g/L, respectively. In addition, scanning electron microscopy showed that all modified films have the characteristic three-dimensional network of cellulose nanofibers with dense structure and low porosity as well as larger fiber size compared to control. X-ray diffraction indicated that BC fortified with carboxymethyl cellulose exhibited lower crystallinity while Fourier infrared spectroscopy showed characteristic peaks of both control and modified BC films.
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Affiliation(s)
- Nhu-Ngoc Nguyen
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, Vietnam
| | - Thi Tuong Vi Tran
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, Vietnam
| | - Quoc-Duy Nguyen
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, Vietnam
| | - Tran-Phong Nguyen
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, Vietnam
| | - Tuyet-Ngan Lien
- Faculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, 754000, Vietnam
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Bacterial cellulose production by a strain of Komagataeibacter rhaeticus isolated from residual loquat. Appl Microbiol Biotechnol 2023; 107:1551-1562. [PMID: 36723702 DOI: 10.1007/s00253-023-12407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 02/02/2023]
Abstract
In this study, loquat extract was selected as a promising substrate for bacterial cellulose (BC) production. A new BC-producing bacterial strain was isolated from residual loquat and identified as Komagataeibacter rhaeticus. BC production with different carbon sources and with loquat extract was investigated. Among all tested carbon sources, glucose was demonstrated to be the best substrate for BC production by K. rhaeticus, with up to 7.89 g/L dry BC obtained under the optimal initial pH (5.5) and temperature (28 °C) with 10 days of fermentation. The total sugar and individual sugars were investigated in different loquat extracts, in which fructose, glucose, and sucrose were the three main sugars. When loquat extract was prepared with a solid‒liquid (S-L) ratio of 2:1, the concentrations of glucose, fructose, and sucrose were 7.91 g/L, 9.31 g/L, and 2.84 g/L, respectively. The BC production obtained from loquat extract was higher than that of other carbon sources except glucose, and 6.69 g/L dry BC was obtained from loquat extract with an S-L ratio of 2:1. After BC production, all sugars substantially decreased, with the utilization of glucose, fructose, and sucrose reaching 93.9%, 87.9%, and 100%, respectively. These results suggested that the different sugars in loquat extract were all carbon sources participating in BC production by K. rhaeticus. Structural and physicochemical properties were investigated by SEM, TGA, XRD, and FT-IR spectroscopy. The results showed that the structural, chemical group, and water holding capacity of BC obtained from loquat extract were similar to those of BC obtained from glucose, but the crystallinity and thermal stability of BC were higher than those of BC from mannose and lactose but lower than those of BC from glucose and fructose. KEY POINTS: • A new BC-producing strain was isolated and identified as Komagataeibacter rhaeticus. • Loquat extract is an alternative substrate for BC production. • The BC obtained from loquat extract owns advanced physicochemical properties.
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