1
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Ahmed M, Amirat M. FTIR, 1H, and 13C NMR Characterization and Antibacterial Activity of the Combination of Euphorbia Honey and Potato Starch. Comb Chem High Throughput Screen 2024; 27:1913-1918. [PMID: 38031781 DOI: 10.2174/0113862073243939231031064916] [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: 03/26/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023]
Abstract
AIM AND OBJECTIVE In recent years, natural biopolymer (potato starch) hydrogels have been widely used in the field of wound dressing material. This study aimed to develop and characterize a novel antibacterial hydrogel made from potato starch and natural honey. METHODS The structure of the composite films was evaluated by Fourier transform infrared (FTIR) and 1H,13C nuclear magnetic resonance (NMR) spectroscopy, and the antibacterial activities were tested by agar diffusion method. FTIR analysis showed chemical interaction between the components of Euphorbia honey (EH) and potato starch hydrogel (PSH). RESULTS The 1H-13C NMR and FTIR analyses of EH/PSH confirmed their structure and showed the presence of glucose and hydrocarbon derivatives. After 24 h of incubation, the EH/PSH hydrogel showed good antibacterial activity against three bacterial strains (K.pneumonia, P.mirabilis, and P. aeruginosa) by producing clear inhibition zones of 12.33 ± 1.88 mm, 15.33 ± 0.94, and 10 ± 0 mm, respectively. In addition, K. pneumonia, P. mirabilis, and P. aeruginosa were sensitive to the EH/SPH with a minimum inhibitory concentration (MIC) of 1 %. CONCLUSION These results suggest that EH-PS has potential as an alternative candidate to conventional antibiotics.
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Affiliation(s)
- Moussa Ahmed
- Institute of Veterinary Sciences, Ibn-Khaldoun of Tiaret University, Tiaret, Algeria
| | - Mokhtar Amirat
- Institute of Veterinary Sciences, Ibn-Khaldoun of Tiaret University, Tiaret, Algeria
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2
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Gallegos C, Turcanu M, Assegehegn G, Brito-de la Fuente E. Rheological Issues on Oropharyngeal Dysphagia. Dysphagia 2023; 38:558-585. [PMID: 34216239 DOI: 10.1007/s00455-021-10337-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/23/2021] [Indexed: 10/20/2022]
Abstract
There is an increasing proof of the relevance of rheology on the design of fluids for the diagnosis and management of dysphagia. In this sense, different authors have reported clinical evidence that support the conclusion that an increase in bolus viscosity reduces the risks of airway penetration during swallowing. However, this clinical evidence has not been associated yet to the definition of objective viscosity levels that may help to predict a safe swallowing process. In addition, more recent reports highlight the potential contribution of bolus extensional viscosity, as elongational flows also develops during the swallowing process. Based on this background, the aim of this review paper is to introduce the lecturer (experts in Dysphagia) into the relevance of Rheology for the diagnosis and management of oropharyngeal dysphagia (OD). In this sense, this paper starts with the definition of some basic concepts on Rheology, complemented by a more extended vision on the concepts of shear viscosity and elongational viscosity. This is followed by a short overview of shear and elongational rheometrical techniques relevant for the characterization of dysphagia-oriented fluids, and, finally, an in-depth analysis of the current knowledge concerning the role of shear and elongational viscosities in the diagnosis and management of OD (shear and elongational behaviors of different categories of dysphagia-oriented products and contrast fluids for dysphagia assessment, as well as the relevance of saliva influence on bolus rheological behavior during the swallowing process).
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Affiliation(s)
- Crispulo Gallegos
- Product and Process Engineering Center, Fresenius Kabi Deutschland GmbH, Daimlerstrasse 22, 61352, Bad Homburg, Germany.
| | - Mihaela Turcanu
- Product and Process Engineering Center, Fresenius Kabi Deutschland GmbH, Daimlerstrasse 22, 61352, Bad Homburg, Germany
| | - Getachew Assegehegn
- Product and Process Engineering Center, Fresenius Kabi Deutschland GmbH, Daimlerstrasse 22, 61352, Bad Homburg, Germany
| | - Edmundo Brito-de la Fuente
- Product and Process Engineering Center, Fresenius Kabi Deutschland GmbH, Daimlerstrasse 22, 61352, Bad Homburg, Germany
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3
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Li Z, Kong H, Li Z, Gu Z, Ban X, Hong Y, Cheng L, Li C. Designing liquefaction and saccharification processes of highly concentrated starch slurry: Challenges and recent advances. Compr Rev Food Sci Food Saf 2023; 22:1597-1612. [PMID: 36789798 DOI: 10.1111/1541-4337.13122] [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: 09/18/2022] [Revised: 01/15/2023] [Accepted: 01/25/2023] [Indexed: 02/16/2023]
Abstract
Starch-based sugars are an important group of starch derivatives used in food, medicine, chemistry, and other fields. The production of starch sugars involves starch liquefaction and saccharification processes. The production cost of starch sugars can be reduced by increasing the initial concentration of starch slurry. However, the usage of the highly concentrated starch slurry is characterized by challenges such as low reaction efficiency and poor product performance during the liquefaction and saccharification processes. In this study, we endeavored to provide a reference guide for improving high-concentration starch sugar production. Thus, we reviewed the effects of substrate concentration on the starch sugar production process and summarized several potential strategies. These regulation strategies, such as physical field pretreatment, complex enzyme-assisted, and temperature control, can significantly increase the starch concentration and mitigate the challenges of using highly concentrated starch slurry. We believe that highly concentrated starch sugar production will achieve a qualitative leap in the future. This review provides theoretical guidance and highlights the importance of high concentration in starch-based sugar production. Further studies are needed to explore the fine structure and enzyme attack mode during the liquefaction and saccharification processes to regulate the production of more targeted products.
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Affiliation(s)
- Zexi Li
- School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Haocun Kong
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Zhaofeng Li
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
| | - Zhengbiao Gu
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
| | - Xiaofeng Ban
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
| | - Yan Hong
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
| | - Li Cheng
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
| | - Caiming Li
- Key Laboratory of Synergetic and Biological Colloids, Ministry of Education, Wuxi, China.,School of Food Science and Technology, Jiangnan University, Wuxi, China.,Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, China
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4
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Wang F, Chang L, Wang L, Gong Y, Guo Y, Shi Q, Quan F. In-situ compatibilized starch/polyacylonitrile composite fiber fabricated via dry-wet spinning technique. Int J Biol Macromol 2022; 212:412-419. [PMID: 35577192 DOI: 10.1016/j.ijbiomac.2022.05.091] [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: 02/28/2022] [Revised: 04/26/2022] [Accepted: 05/10/2022] [Indexed: 11/19/2022]
Abstract
An in-situ compatibilized starch (St) and polyacrylonitrile (PAN) composite spinning solution was designed by preparing starch-graft-polyacrylonitrile (St-g-PAN) through graft copolymerizing acrylonitrile from soluble starch and using ammonium cerium nitrate (CAN) as initiator. As dimethyl sulfoxide (DMSO) was used as the solvent, St/St-g-PAN/PAN/DMSO spinning solution was prepared and St/St-g-PAN/PAN composite fibers were obtained by dry-wet spinning technique. The effects of air gap, coagulation bath, hot drawing and stretching, and thermal-setting process were studied in detail. Fourier transform infrared spectroscopy (FT-IR), solid state nuclear magnetic resonance (13C NMR), thermogravimetric analysis (TGA), X-ray diffraction analysis (XRD), and scanning electron microscopy (SEM) were used to characterize the structure and morphology of the copolymer and the fibers. Single fiber strength tester and sonic orientation instrument were performed to measure the fiber mechanical properties and orientation degrees. The results showed that as the grafting ratio ~150.0% and the reacting mixture containing St ~9.8%, St-g-PAN ~81.6%, and homo-PAN ~8.6% in DMSO solution with 6.0 wt% in concentration were used, the spinning parameters such as air gap ~35 mm, coagulation bath concentration ~70%, temperature ~25 °C, and positive stretching ~48%, hot drawing and stretching 6 times at 80 °C, thermal-setting at 90 °C for 3 h under constant length mode were met, composite fibers with breaking strength 3.41 cN·dtex-1, breaking elongation 14.41%, sonic orientation factor 0.625, moisture recovery ratio 10.53% under standard condition (1 atm, 22 °C, and relative humidity 65%), and boiling water shrinkage ratio 9.60% were obtained. The as prepared composite fiber was better than common viscose fiber 2.11 cN·dtex-1 and cotton fiber ~3.24 cN·dtex-1 and expected to be used in the fields of medical gauze, bandage, protective clothing, et al. besides of common textiles. The in-situ compatibilization method can be applied in preparation of other composite polymer materials.
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Affiliation(s)
- Fangjun Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Linlin Chang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Lijuan Wang
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yumei Gong
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yanzhu Guo
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Qiang Shi
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Fengyu Quan
- State Key Laboratory of Bio-Fibers and Eco-textiles (Qingdao University), Qingdao 266071, PR China.
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5
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A Review of In Vitro Methods for Measuring the Glycemic Index of Single Foods: Understanding the Interaction of Mass Transfer and Reaction Engineering by Dimensional Analysis. Processes (Basel) 2022. [DOI: 10.3390/pr10040759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The Glycemic Index (GI) has been described by an official method ISO (International Organization for Standardization) 26642:2010 for labeling purposes. The development of in vitro methods for GI measurement has faced significant challenges. Mass transfer and reaction engineering theory may assist in providing a quantitative understanding of in vitro starch digestion and glycemic response from an engineering point of view. We suggest that in vitro GI measurements should consider the mouth and the stomach in terms of fluid mechanics, mass transfer, length scale changes, and food-solvent reactions, and might consider a significant role for the intestine as an absorption system for the glucose that is generated before the intestine. Applying mass transfer and reaction engineering theory may be useful to understand quantitative studies of in vitro GI measurements. The relative importance of reactions and mass-transfer has been estimated from literature measurements through estimating the Damköhler numbers (Da), and the values estimated of this dimensionless group (0.04–2.9) suggest that both mass transfer and chemical reaction are important aspects to consider.
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6
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Labrath YP, Belge PV, Kulkarni UG, Gaikar VG. Process intensification for enzyme assisted turmeric starch hydrolysis in hydrotropic and supercritical conditions. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2020-0161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The turmeric rhizome (Curcuma longa) contains curcuminoids embedded in the starch matrix. It is thus important to target starch hydrolysis to enhance extraction of curcuminoids. In the case of starch hydrolysis, α-amylase is more efficient when the starch is in a gelatinised form than when it is in its natural form. The present work includes hydrolysis of turmeric starch in its natural and gelatinised forms using α-amylase in hydrotrope solution (HS) and scCO2. The optimum rate of starch hydrolysis was obtained using 200 IU cm−3 of α-amylase, at reaction conditions of 6.5 pH at 328 K when 10% w/w of turmeric powder was stirred at 900 rpm in HSs. The hydrolysis in 15 MPa scCO2 at room temperature required a phase modifier and 40 min of residence time (RT). The enzyme treatment of turmeric powder in HSs increased the filtration rate for curcuminoid extraction (gelatinised and native) compared to untreated turmeric powder.
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Affiliation(s)
- Yogita P. Labrath
- Department of Chemical Engineering , Institute of Chemical Technology , Nathalal Parekh Marg, Matunga , Mumbai 400 019 , India
| | - Prafulla V. Belge
- Department of Chemical Engineering , Institute of Chemical Technology , Nathalal Parekh Marg, Matunga , Mumbai 400 019 , India
| | - Uma G. Kulkarni
- Department of Chemical Engineering , Institute of Chemical Technology , Nathalal Parekh Marg, Matunga , Mumbai 400 019 , India
| | - Vilas G. Gaikar
- Department of Chemical Engineering , Institute of Chemical Technology , Nathalal Parekh Marg, Matunga , Mumbai 400 019 , India
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7
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Cui W, Ma Z, Li X, Hu X. Structural rearrangement of native and processed pea starches following simulated digestion in vitro and fermentation characteristics of their resistant starch residues using human fecal inoculum. Int J Biol Macromol 2021; 172:490-502. [PMID: 33472022 DOI: 10.1016/j.ijbiomac.2021.01.092] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/27/2020] [Accepted: 01/14/2021] [Indexed: 12/11/2022]
Abstract
Pea starches, in both native (NPS) and retrograded-autoclaved forms (RAPS), were subjected to simulated gastrointestinal (GI) digestion in vitro, their multi-scale structural characteristics, morphological features, molecular distribution and thermal properties were characterized. A gradual increase in the short-/long-range crystallinity, melting enthalpy of gelatinization on increasing digestion time was observed for both the native and retrograded-autoclaved pea starch samples based on the X-ray diffraction, Fourier-transform infrared spectra, solid-state 13CNMR and differential scanning calorimetry measurements. It was especially noticed that the growth rate of crystallinity and double helices, as well as the decrease in Mw values were evidently greater for RAPS than for NPS. To investigate how different molecular fine structure of pea starch substrate affects the gut microbiota shifts and dynamic short-chain fatty acid profile, their resistant starch residues obtained from both native and retrograded-autoclaved pea starch after 8 h of simulated GI tract digestion was used as the fermentation substrate. The levels of acetate, propionate and butyrate gradually increased with the increasing fermentation time for NPS and RAPS. In comparison to the blank control (i.e., the group without the addition of carbohydrate), the fermented NPS and RAPS obviously resulted in an increased abundance of Firmicutes and Bacteroidetes, accompanied by a decrease in Proteobacteria, Actinobacteria and Verrucomicrobia. Both NPS and RAPS promoted different shifts in the microbial community at the genus level, with an increase in the abundance of Bacteroides, Megamonas and Bifidobacterium, as well as a reduction in the abundance of Fusobacterium, Faecalibacterium and Lachnoclostridium in comparison to the blank control samples.
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Affiliation(s)
- Wenxin Cui
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Zhen Ma
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China.
| | - Xiaoping Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
| | - Xinzhong Hu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, China
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8
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Neoh GKS, Dieters MJ, Tao K, Fox GP, Nguyen PTM, Gilbert RG. Late-Maturity Alpha-Amylase in Wheat ( Triticum aestivum) and Its Impact on Fresh White Sauce Qualities. Foods 2021; 10:foods10020201. [PMID: 33498449 PMCID: PMC7909430 DOI: 10.3390/foods10020201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/06/2021] [Accepted: 01/19/2021] [Indexed: 11/21/2022] Open
Abstract
When wheat experiences a cold-temperature ‘shock’ during the late stage of grain filling, it triggers the abnormal synthesis of late-maturity α-amylase (LMA). This increases the enzyme content in affected grain, which can lead to a drastic reduction in falling number (FN). By commercial standards, a low FN is taken as an indication of inferior quality, deemed unsuitable for end-product usage. Hence, LMA-affected grains are either rejected or downgraded to feed grade at the grain receiving point. However, previous studies have found no substantial correlation between low FN-LMA and bread quality. The present study extends previous investigations to semi-solid food, evaluating the physical quality of fresh white sauce processed from LMA-affected flour. Results show that high-LMA flours had low FNs and exhibited poor pasting characteristics. However, gelation occurred in the presence of other components during fresh white sauce processing. This demonstrates that LMA-affected flours may have new applications in low-viscosity products.
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Affiliation(s)
- Galex K. S. Neoh
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, College of Agriculture, Yangzhou University, Yangzhou 225009, China; (G.K.S.N.); (K.T.)
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD 4072, Australia; (M.J.D.); (G.P.F.)
| | - Mark J. Dieters
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD 4072, Australia; (M.J.D.); (G.P.F.)
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD 4072, Australia;
| | - Keyu Tao
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, College of Agriculture, Yangzhou University, Yangzhou 225009, China; (G.K.S.N.); (K.T.)
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD 4072, Australia; (M.J.D.); (G.P.F.)
| | - Glen P. Fox
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD 4072, Australia; (M.J.D.); (G.P.F.)
- Department of Food Science and Technology, University of California Davis, Davis, CA 95616, USA
| | - Phuong T. M. Nguyen
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD 4072, Australia;
| | - Robert G. Gilbert
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, College of Agriculture, Yangzhou University, Yangzhou 225009, China; (G.K.S.N.); (K.T.)
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, QLD 4072, Australia; (M.J.D.); (G.P.F.)
- Correspondence:
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9
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Apostolidi ME, Kalantzi S, Hatzinikolaou DG, Kekos D, Mamma D. Catalytic and thermodynamic properties of an acidic α-amylase produced by the fungus Paecilomyces variotii ATHUM 8891. 3 Biotech 2020; 10:311. [PMID: 32582508 DOI: 10.1007/s13205-020-02305-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 06/13/2020] [Indexed: 02/08/2023] Open
Abstract
An extracellular acid stable α-amylase from Paecilomyces variotii ATHUM 8891 (PV8891 α-amylase) was purified to homogeneity applying ammonium sulfate fractionation, ion exchange and gel filtration chromatography and exhibited a reduced molecular weight of 75 kDa. The purified enzyme was optimally active at pH 5.0 and 60 °C and stable in acidic pH (3.0-6.0). K m, v max and k cat for starch hydrolysis were found 1.1 g L-1, 58.5 μmole min-1 (mg protein)-1, and 73.1 s-1, respectively. Amylase activity was marginally enhanced by Ca2+ and Fe2+ ions while Cu2+ ions strongly inhibited it. Thermodynamic parameters determined for starch hydrolysis (Ε α, ΔH*, ΔG*, ΔS*, Δ G E - S ∗ and Δ G E - T ∗ ) suggests an effective capacity of PV8891 α-amylase towards starch hydrolysis. Thermal stability of PV8891 α-amylase was assessed at different temperatures (30-80 οC). Thermodynamic parameters ( E a d , ΔH*, ΔG*, ΔS*) as well as the integral activity of a continuous system for starch hydrolysis by the PV8891 α-amylase revealed satisfactory thermostability up to 60 °C. The acidic nature and its satisfactory performance at temperatures lower than the industrially used amylases may represent potential applications of PV8891 α-amylase in starch processing industry.
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10
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Neoh G, Tan X, Dieters M, Fox G, Gilbert R. Effects of cold temperature on starch molecular structure and gelatinization of late-maturity alpha-amylase affected wheat. J Cereal Sci 2020. [DOI: 10.1016/j.jcs.2020.102925] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Ma Z, Hu X, Boye JI. Research advances on the formation mechanism of resistant starch type III: A review. Crit Rev Food Sci Nutr 2018; 60:276-297. [DOI: 10.1080/10408398.2018.1523785] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Zhen Ma
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, Shaanxi, China
| | - Xinzhong Hu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an, Shaanxi, China
| | - Joyce I. Boye
- Food Research and Development Centre, Agriculture and Agri-Food Canada, St. Hyacinthe, Quebec, Canada
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12
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Starch-graft-polyacrylonitrile nanofibers by electrospinning. Int J Biol Macromol 2018; 120:2552-2559. [DOI: 10.1016/j.ijbiomac.2018.09.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 01/01/2023]
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13
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Tran TTT, Nguyen KT, Le VVM. Effects of ultrasonication variables on the activity and properties of alpha amylase preparation. Biotechnol Prog 2018; 34:702-710. [DOI: 10.1002/btpr.2613] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 01/09/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Thi Thu Tra Tran
- Department of Food Technology; Ho Chi Minh City University of Technology, Vietnam National University Systems - Ho Chi Minh City (VNU-HCM), 268 Ly Thuong Kiet street, District 10; 70000 Ho Chi Minh City Vietnam
| | - Khanh Tien Nguyen
- Department of Food Technology; Ho Chi Minh City University of Technology, Vietnam National University Systems - Ho Chi Minh City (VNU-HCM), 268 Ly Thuong Kiet street, District 10; 70000 Ho Chi Minh City Vietnam
| | - Van Viet Man Le
- Department of Food Technology; Ho Chi Minh City University of Technology, Vietnam National University Systems - Ho Chi Minh City (VNU-HCM), 268 Ly Thuong Kiet street, District 10; 70000 Ho Chi Minh City Vietnam
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15
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The Effect of Different Starch Liberation and Saccharification Methods on the Microbial Contaminations of Distillery Mashes, Fermentation Efficiency, and Spirits Quality. Molecules 2017; 22:molecules22101647. [PMID: 28974014 PMCID: PMC6151438 DOI: 10.3390/molecules22101647] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 09/27/2017] [Accepted: 09/29/2017] [Indexed: 11/23/2022] Open
Abstract
The aim of this study was to evaluate the influence of different starch liberation and saccharification methods on microbiological contamination of distillery mashes. Moreover, the effect of hop α-acid preparation for protection against microbial infections was assessed. The quality of agricultural distillates was also evaluated. When applying the pressureless liberation of starch (PLS) and malt as a source of amylolytic enzymes, the lactic acid bacteria count in the mashes increased several times during fermentation. The mashes obtained using the pressure-thermal method and malt enzymes revealed a similar pattern. Samples prepared using cereal malt exhibited higher concentrations of lactic and acetic acids, as compared to mashes prepared using enzymes of microbial origin. The use of hop α-acids led to the reduction of bacterial contamination in all tested mashes. As a result, fermentation of both mashes prepared with microbial origin enzyme preparations and with barley malt resulted in satisfactory efficiency and distillates with low concentrations of aldehydes.
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16
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Gallegos C, Brito-de la Fuente E, Clavé P, Costa A, Assegehegn G. Nutritional Aspects of Dysphagia Management. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 81:271-318. [PMID: 28317607 DOI: 10.1016/bs.afnr.2016.11.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This chapter describes the nutritional aspects of dysphagia management by starting with the definition of these two conditions (dysphagia and malnutrition) that share three main clinical characteristics: (a) their prevalence is very high, (b) they can lead to severe complications, and (c) they are frequently underrecognized and neglected conditions. From an anatomical standpoint, dysphagia can result from oropharyngeal and/or esophageal causes; from a pathophysiological perspective, dysphagia can be caused by organic or structural diseases (either benign or malignant) or diseases causing impaired physiology (mainly motility and/or perception disorders). This chapter gathers up-to-date information on the screening and diagnosis of oropharyngeal dysphagia, the consequences of dysphagia (aspiration pneumonia, malnutrition, and dehydration), and on the nutritional management of dysphagic patients. Concerning this last topic, this chapter reviews the rheological aspects of swallowing and dysphagia (including shear and elongational flows) and its influence on the characteristics of the enteral nutrition for dysphagia management (solid/semisolid foods and thickened liquids; ready-to-use oral nutritional supplements and thickening powders), with special focus on the real characteristics of the bolus after mixing with human saliva.
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Affiliation(s)
- C Gallegos
- I&D Centre Complex Formulations and Processing Technologies, Fresenius Kabi Deutschland GmbH, Bad Homburg, Germany.
| | - E Brito-de la Fuente
- I&D Centre Complex Formulations and Processing Technologies, Fresenius Kabi Deutschland GmbH, Bad Homburg, Germany
| | - P Clavé
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Barcelona, Spain
| | - A Costa
- Dysphagia Unit, Universitat de Barcelona, Hospital de Mataró, Mataró, Barcelona, Spain
| | - G Assegehegn
- I&D Centre Complex Formulations and Processing Technologies, Fresenius Kabi Deutschland GmbH, Bad Homburg, Germany
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Effect of temperature and varying level of carbohydrate and lipid on growth, feed efficiency and nutrient digestibility of brook trout, Salvelinus fontinalis (Mitchill, 1814). Anim Feed Sci Technol 2014. [DOI: 10.1016/j.anifeedsci.2014.04.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Wu C, Zhou X, Xu Y, Li H, Tian Y, Xu X, Jin Z. Characterization and mechanism of action of Microbacterium imperiale glucan 1,4-α-maltotriohydrolase. Carbohydr Res 2014; 384:46-50. [DOI: 10.1016/j.carres.2013.11.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 11/16/2013] [Accepted: 11/20/2013] [Indexed: 12/12/2022]
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Smrčková P, Horský J, Šárka E, Koláček J, Netopilík M, Walterová Z, Kruliš Z, Synytsya A, Hrušková K. Hydrolysis of wheat B-starch and characterisation of acetylated maltodextrin. Carbohydr Polym 2013; 98:43-9. [PMID: 23987315 DOI: 10.1016/j.carbpol.2013.04.065] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 04/08/2013] [Accepted: 04/17/2013] [Indexed: 11/19/2022]
Abstract
Wheat B-starch was hydrolysed by α-amylase "Liquozyme supra" from Bacillus licheniformis at 90 °C and pH 7. After 2 h, the dextrose equivalent was 18; according to size exclusion chromatography, however, the hydrolysate contained not only dominant malto-oligosaccharides with the degree of polymerisation (DP)<10 but also more than 20% of components with DP higher than 40. The product was acetylated to a high degree as verified by FTIR and (1)H NMR (degree of substitution DS=3.1); nevertheless, detailed analysis of the MALDI-TOF mass spectra of the product showed that most of the malto-oligosaccharides molecules contained one or two residual hydroxyls. Size exclusion chromatography confirmed that the acetylated maltodextrin still contained a significant part with DP>40. This non-uniformity of acetylated maltodextrin, both with respect to DP and to DS, must be taken into account in the development of acetylated-maltodextrin applications such as use as plasticisers or compatibilisers in biodegradable composites.
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Affiliation(s)
- Petra Smrčková
- Institute of Chemical Technology, Department of Carbohydrates and Cereals, Technická 5, 166 28 Prague 6, Czech Republic
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Sodium dodecyl sulphate, a strong inducer of thermostable glucanhydrolase secretion from a derepressed mutant strain of Bacillus alcalophilus GCBNA-4. Appl Biochem Biotechnol 2013; 169:2467-77. [PMID: 23456276 DOI: 10.1007/s12010-013-0139-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
Abstract
In the present study, we report the optimisation of batch conditions for improved α-1,4-glucan-glucanohydrolase (GGH) secretion by a nitrous acid (NA)-treated Bacillus alcalophilus. The wild (isolate GCB-18) and NA-derivative (mutant GCBNA-4) were grown in a medium containing 10 g/L nutrient broth, 10 g/L starch, 5 g/L lactose, 2 g/L ammonium sulphate, 2 g/L CaCl2 and phosphate buffer (pH 7.6). Sodium dodecyl sulphate (SDS) was used as an enzyme inducer while batch fermentations were carried out at 40 °C. The mutant produced GGH in 40 h which was 15-fold higher than the wild in presence of SDS. Thermodynamic studies revealed that the mutant culture exhibited the capability for improved enzyme activity over a broad range of temperature (35-70 °C). The enzyme was purified by cation-exchange column chromatography with ~80 % recovery. The performance of fuzzy-logic system control was found to be highly promising for the improved substrate conversion rate. The correlation (1.045E + 0025) among variables demonstrated the model terms as highly significant indicating commercial utility of the culture used (P < 0.05).
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Li J, Vasanthan T, Bressler DC. Improved cold starch hydrolysis with urea addition and heat treatment at subgelatinization temperature. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.09.061] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kandil A, Li J, Vasanthan T, Bressler DC, Tyler RT. Compositional changes in whole grain flours as a result of solvent washing and their effect on starch amylolysis. Food Res Int 2011. [DOI: 10.1016/j.foodres.2010.10.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ghosh B, Ray R. Saccharification of Raw Native Starches by Extracellular Isoamylase of Rhizopus oryzae. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/biotech.2010.224.228] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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