1
|
Farag MA, Ashaolu TJ, Guirguis H, Khalifa I. Implementation of HACCP in the production of Egyptian cheeses: A review. EFOOD 2023. [DOI: 10.1002/efd2.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
Affiliation(s)
- Mohamed A. Farag
- Pharmacognosy Department, College of Pharmacy Cairo University Cairo Egypt
| | | | - Hania Guirguis
- Pharmacognosy Department, College of Pharmacy Cairo University Cairo Egypt
| | - Ibrahim Khalifa
- Food Technology Department, Faculty of Agriculture Benha University Moshtohor Egypt
| |
Collapse
|
2
|
El-Baky NA, Amara AAAF, Redwan EM. Nutraceutical and therapeutic importance of clots and their metabolites. NUTRACEUTICALS 2023:241-268. [DOI: 10.1016/b978-0-443-19193-0.00009-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
3
|
Traditional Fermented Dairy Products in Southern Mediterranean Countries: From Tradition to Innovation. FERMENTATION 2022. [DOI: 10.3390/fermentation8120743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Fermented dairy products have been essential elements in the diet of Southern Mediterranean countries for centuries. This review aims to provide an overview of the traditional fermented products in Southern Mediterranean countries, with a focus on fermented dairy products, and to discuss innovative strategies to make improved versions of these traditional products. A large variety of fermented dairy products were reviewed, showing high diversity, depending on the used raw materials, starter cultures, and preparation procedures. Traditionally, dairy products were fermented using spontaneous fermentation, back-slopping, and/or the addition of rennet. Compared with commercial products, traditional products are characterized by peculiar organoleptic features owing to the indigenous microflora. The main limitation of traditional products is preservation as most products were consumed fresh. In addition to drying, brine or oil was used to extend the product shelf life but resulted in high salt/fat products. Several studies suggested alternative ingredients/processing to make revised products with new flavors, improved nutritional quality, and a longer shelf life. There is still plenty of room for more research to obtain a better understanding of the indigenous microflora and on quality improvement and standardization to reach a wider market.
Collapse
|
4
|
Biochemical and Microbiological Changes Associated with Fermentation of Durum Wheat for Lemzeïet Processing, a Traditional Algerian Fermented Food. Processes (Basel) 2022. [DOI: 10.3390/pr10112347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In Algeria, “Lemzeïet” is prepared by the natural fermentation of wheat. This study aimed to follow the evolution of microbiological and biochemical properties of Lemzeïet with and without vinegar addition for 3, 6, 9 and 12 months. Lactic acid bacteria (LAB) were identified and the microbial count, as well as pH, acidity, protein, fat, ash and starch contents were determined. Results showed that Lemzeïet samples represented a safe product after the gradual absence of fungi. It also contained a significant load of LAB that were cocci or rods, white or yellow, grouped in chain, pair and tetrad. LAB isolates were mannitol positive, grew between 10 and 45 °C, showed resistance at 63.5 °C and the majority were homo-fermentative. Results showed a significant decrease in pH during fermentation regardless of the vinegar addition. Protein content increased up to 14.90% and 15.50% at the end of fermentation. The fat and starch contents decreased after 12 months of fermentation, regardless of the vinegar addition. Ash content remained high (1.41% and 1.45%) after six months of fermentation with and without vinegar, respectively. The microbiological and the biochemical characteristics of Lemzeïet make it a very interesting raw material in the manufacturing of healthy foods.
Collapse
|
5
|
Ben Hassouna K, Ben Salah-Abbès J, Chaieb K, Abbès S. Mycotoxins occurrence in milk and cereals in North African countries - a review. Crit Rev Toxicol 2022; 52:619-635. [PMID: 36723615 DOI: 10.1080/10408444.2022.2157703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
North African countries; Algeria, Egypt, Libya, Morocco and Tunisia suffer from mycotoxin contamination. Various studies have indicated the presence of mycotoxins in raw milk and cereals (i.e. wheat, barley, maize and cereal-based products). Aflatoxins (AFs), Aflatoxin M1 (AFM1), Ochratoxin A (OTA), Fumonisin (FB1) and Zearalenone (ZEN)-mycotoxin are the most detected due to climatic change in the region. In this review, we will present the kind of foods and feeds cereals and milk based products contaminated and the level of their contaminated mycotoxin. On the other hand, researchers try to find biologic methods to remove/mitigate mycotoxins in food and feed using bio-products. But the research works concerning legislations and mycotoxin risk assessment still rare. Therefore, it appears necessary to make review on the current status of mycotoxins in North African countries in order to explore data related to contamination of basic food in this region and to highlight the problem to the policy-makers to establish a serious legislation on this matter. On the other hand, to give more information to the worldwide readers about the impact of climate change on the food and feed pollution on mycotoxins in the Mediterranean Sea region.
Collapse
Affiliation(s)
- Khouloud Ben Hassouna
- Laboratory of Genetic, Biodiversity and Bio-resources Valorisation, University of Monastir, Monastir, Tunisia.,Laboratory of Analysis, Treatment and Valorization of Environmental Pollutants and Products, Faculty of Pharmacy, Monastir University, Monastir, Tunisia
| | - Jalila Ben Salah-Abbès
- Laboratory of Genetic, Biodiversity and Bio-resources Valorisation, University of Monastir, Monastir, Tunisia
| | - Kamel Chaieb
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Samir Abbès
- Laboratory of Genetic, Biodiversity and Bio-resources Valorisation, University of Monastir, Monastir, Tunisia.,High Institute of Biotechnology of Béja, University of Jendouba, Jendouba, Tunisia
| |
Collapse
|
6
|
Lv J, Lin X, Wang W, Xu W, Li C, Ji C, Liang H, Li S, Zhang S, Zhu B. Effects of papain,
Lactiplantibacillus plantarum
1‐24‐LJ and their combinations on bacterial community changes and flavour improvement in
Suanzhayu
, a Chinese traditional fish. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing Lv
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
- College of Food and Bioengineering Zhengzhou University of Light Industry Zhengzhou 450001 China
- Henan Key Laboratory of Cold Chain Food Quality and Safety Control Zhengzhou 450001 China
- Collaborative Innovation Center of Food Production and Safety Zhengzhou 450001 China
| | - Xinping Lin
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Wenqing Wang
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Wenhuan Xu
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Caichan Li
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Chaofan Ji
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Huipeng Liang
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Shengjie Li
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Sufang Zhang
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| | - Beiwei Zhu
- National Engineering Research Center of Seafood, Collaborative Innovation Center of Seafood Deep Processing, Liaoning Province Collaborative Innovation Center for Marine Food Deep Processing, School of Food Science and Technology Dalian Polytechnic University Dalian 116034 China
| |
Collapse
|
7
|
NAUREEN ZAKIRA, BONETTI GABRIELE, MEDORI MARIACHIARA, AQUILANTI BARBARA, VELLUTI VALERIA, MATERA GIUSEPPINA, IACONELLI AMERIGO, BERTELLI MATTEO. Foods of the Mediterranean diet: lacto-fermented food, the food pyramid and food combinations. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2022; 63:E28-E35. [PMID: 36479486 PMCID: PMC9710393 DOI: 10.15167/2421-4248/jpmh2022.63.2s3.2744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The Mediterranean diet proved to be one of the healthiest diets in the word. It has several beneficial effects and it prevents many non-communicable diseases, such as cancer, cardiovascular diseases, and obesity. Before being a culinary regime, the Mediterranean diet is characterized by specific cultural heritages and traditions, also influencing the lifestyle of the populations. The Mediterranean diet follows the so-called food pyramid, comprising several food combinations. Indeed, it is mainly composed by vegetables, fish and dairy products, while red meat and sweets are poorly consumed. Processed foods are mainly avoided, apart from lacto-fermented ones, the first processed foods consumed by humans. Food fermentation by microorganisms not only improves the functionality of bioactive metabolites, but also increases the shelf life and organoleptic properties of the food. Lactic acid bacteria play a vital role in transforming the food constituents, thereby enhancing their nutritional and functional properties. In addition, these foods introduce beneficial bacteria into gut microbiota, thus maintaining a healthy gut microbiome and corresponding gut-brain axis, thus providing an overall improvement in health and a reduced risk of non-communicable diseases and metabolic disorders. This review will focus on the Mediterranean diet, on its characterising food pyramid and food combinations, and on lacto-fermented foods, one of the components of the Mediterranean diet with the most beneficial effects.
Collapse
Affiliation(s)
| | | | | | - BARBARA AQUILANTI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - VALERIA VELLUTI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - GIUSEPPINA MATERA
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - AMERIGO IACONELLI
- UOSD Medicina Bariatrica, Fondazione Policlinico Agostino Gemelli IRCCS, Rome, Italy
| | - MATTEO BERTELLI
- MAGI EUREGIO, Bolzano, Italy
- MAGI’S LAB, Rovereto (TN), Italy
- MAGISNAT, Peachtree Corners (GA), USA
| |
Collapse
|
8
|
Kong YS, Ren HY, Liu R, da Silva RR, Aksenov AA, Melnik AV, Zhao M, Le MM, Ren ZW, Xu FQ, Yan XW, Yu LJ, Zhou Y, Xie ZW, Li DX, Wan XC, Long YH, Xu ZZ, Ling TJ. Microbial and Nonvolatile Chemical Diversities of Chinese Dark Teas Are Differed by Latitude and Pile Fermentation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5701-5714. [PMID: 35502792 DOI: 10.1021/acs.jafc.2c01005] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Understanding the microbial and chemical diversities, as well as what affects these diversities, is important for modern manufacturing of traditional fermented foods. In this work, Chinese dark teas (CDTs) that are traditional microbial fermented beverages with relatively high sample diversity were collected. Microbial DNA amplicon sequencing and mass spectrometry-based untargeted metabolomics show that the CDT microbial β diversity, as well as the nonvolatile chemical α and β diversities, is determined by the primary impact factors of geography and manufacturing procedures, in particular, latitude and pile fermentation after blending. A large number of metabolites sharing between CDTs and fungi were discovered by Feature-based Molecular Networking (FBMN) on the Global Natural Products Social Molecular Networking (GNPS) web platform. These molecules, such as prenylated cyclic dipeptides and B-vitamins, are functionally important for nutrition, biofunctions, and flavor. Molecular networking has revealed patterns in metabolite profiles on a chemical family level in addition to individual structures.
Collapse
Affiliation(s)
- Ya-Shuai Kong
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
- School of Tea Science, Xinyang Agriculture and Forestry University, Xinyang 464000, Henan, P. R. China
| | - Hong-Yu Ren
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Rui Liu
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Ricardo R da Silva
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Av. do Café─Vila Monte Alegre, Ribeirão Preto, São Paulo 14040-903, Brazil
| | - Alexander A Aksenov
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Alexey V Melnik
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Ming Zhao
- College of Tea Science, Yunnan Agricultural University, Kunming 100191, Yunnan, P. R. China
| | - Miao-Miao Le
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Zhi-Wei Ren
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Feng-Qing Xu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei 230038, P. R. China
| | - Xiao-Wei Yan
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, P. R. China
| | - Li-Jun Yu
- Key Laboratory of Tea Science of Ministry of Education, National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, College of Horticulture, Hunan Agricultural University, Changsha 410128, P. R. China
| | - Yu Zhou
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Zhong-Wen Xie
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
- International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, Anhui, P. R. China
| | - Da-Xiang Li
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
- International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, Anhui, P. R. China
| | - Xiao-Chun Wan
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
- International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, Anhui, P. R. China
| | - Yan-Hua Long
- School of Life Sciences, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
| | - Zhenjiang Zech Xu
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and College of Food Science and Technology, Nanchang University, 235 Nanjing East Road, Nanchang 330047, Jiangxi, P. R. China
| | - Tie-Jun Ling
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, P. R. China
- International Joint Laboratory on Tea Chemistry and Health Effects of Ministry of Education, Anhui Agricultural University, Hefei 230036, Anhui, P. R. China
| |
Collapse
|
9
|
Boussekine R, Bekhouche F, Debaets S, Thierry A, Maillard MB, Falentin H, Pawtowski A, Barkat M, Coton M, Mounier J. Deciphering the Microbiota and Volatile Profiles of Algerian Smen, a Traditional Fermented Butter. Microorganisms 2022; 10:microorganisms10040736. [PMID: 35456786 PMCID: PMC9028027 DOI: 10.3390/microorganisms10040736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/25/2022] [Accepted: 03/26/2022] [Indexed: 12/04/2022] Open
Abstract
In Algeria, Smen is a fermented butter produced in households using empirical methods. Smen fermentation is driven by autochthonous microorganisms; it improves butter shelf-life and yields highly fragrant products used as ingredients in traditional dishes as well as in traditional medicine. The present study is aimed at investigating microbial diversity and dynamics during Algerian Smen fermentation using both culture-dependent and culture-independent approaches, as well as by monitoring volatile organic compound production. To reach this goal, fifteen Smen samples (final products) produced in households from different regions in Algeria were collected and analyzed. In addition, microbial and volatile compound dynamics at the different stages of Smen manufacturing were investigated for one Smen preparation. The results showed that Smen is a microbiologically safe product, as all hygiene and safety criteria were respected. The dominant microorganisms identified by both techniques were LAB and yeasts. Lactococcus spp. and Streptococcus thermophilus were the main bacterial species involved in spontaneous raw milk fermentation preceding butter-making, while lactobacilli and enterococci were the only bacteria found to be viable during Smen maturation. Regarding fungal diversity, yeast species were only recovered from two mature Smen samples by culturing, while different species (e.g., Geotrichum candidum, Moniliella sp.) were identified in all samples by the culture-independent approach. Using microbial analysis of a single batch, many of these were found viable during manufacturing. Concerning the volatile profiles, they were highly diverse and characterized by a high prevalence of short chain fatty acids, methylketones, and esters. Correlation analysis between microbial diversity and volatile profiles showed that several yeast (Moniliella sp., K. marxianus) and LAB (e.g., Lactococcus spp., S. thermophilus) species were strongly correlated with one or more volatile organic compound families, including several ethyl esters and methyl ketones that can be linked to pleasant, sweetly floral, fruity, buttery, and creamy odors. This study clearly identified key microorganisms involved in Smen fermentation and maturation that could be used in the future for better fermentation control and improvement of quality attributes.
Collapse
Affiliation(s)
- Rania Boussekine
- Laboratoire de Biotechnologie et Qualité des Aliments (BIOQUAL), Institut de la Nutrition, de l’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université Frères Mentouri Constantine 1, Route de Ain-El-Bey, Constantine 25000, Algeria; (R.B.); (F.B.); (M.B.)
| | - Farida Bekhouche
- Laboratoire de Biotechnologie et Qualité des Aliments (BIOQUAL), Institut de la Nutrition, de l’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université Frères Mentouri Constantine 1, Route de Ain-El-Bey, Constantine 25000, Algeria; (R.B.); (F.B.); (M.B.)
| | - Stella Debaets
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, INRAE, Univ Brest, F-29280 Plouzané, France; (S.D.); (A.P.); (M.C.)
| | - Anne Thierry
- STLO, Institut Agro, INRAE, F-35000 Rennes, France; (A.T.); (M.-B.M.); (H.F.)
| | | | - Hélène Falentin
- STLO, Institut Agro, INRAE, F-35000 Rennes, France; (A.T.); (M.-B.M.); (H.F.)
| | - Audrey Pawtowski
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, INRAE, Univ Brest, F-29280 Plouzané, France; (S.D.); (A.P.); (M.C.)
| | - Malika Barkat
- Laboratoire de Biotechnologie et Qualité des Aliments (BIOQUAL), Institut de la Nutrition, de l’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université Frères Mentouri Constantine 1, Route de Ain-El-Bey, Constantine 25000, Algeria; (R.B.); (F.B.); (M.B.)
| | - Monika Coton
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, INRAE, Univ Brest, F-29280 Plouzané, France; (S.D.); (A.P.); (M.C.)
| | - Jérôme Mounier
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne, INRAE, Univ Brest, F-29280 Plouzané, France; (S.D.); (A.P.); (M.C.)
- Correspondence: ; Tel.: +33-(0)2-90-91-51-21
| |
Collapse
|
10
|
Ogwaro BA, O’Gara EA, Hill DJ, Gibson H. A Study of the Antimicrobial Activity of Combined Black Pepper and Cinnamon Essential Oils against Escherichia fergusonii in Traditional African Yoghurt. Foods 2021; 10:foods10112847. [PMID: 34829130 PMCID: PMC8618451 DOI: 10.3390/foods10112847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 11/25/2022] Open
Abstract
The antimicrobial activity of the essential oils of black pepper (BPE) and cinnamon bark (CE) extracts against E. fergusonii was assessed in pasteurized full cream milk during and post-fermentation. The milk was fermented with 1% (v/v) of Lactobacillus delbrueckii subspecies bulgaricus (NCIMB 11778) and Streptococcus thermophilus (NCIMB 10387) (approx. 106 cfu/mL each) and incubated and stored at 25 °C for 5 days (144 h) or at 43 °C for 24 h and then stored at 25 °C for 120 h. The milk was spiked with E. fergusonii at the start of fermentation by the lactic acid bacteria (pre-fermentation contamination) for after fermentation (post fermentation contamination). BPE and CE were applied at concentrations based on their minimum inhibitory concentration of 0.5% and 0.25% respectively as follows: 0.5% BPE alone; 0.125% BPE with 0.1875% CE; 0.25% BPE with 0.125% CE; 0.375% BPE with 0.0625% CE; 0.25% CE alone. Results showed that during fermentation at 25 °C, E. fergusonii grew to a similar level (approx. 109 CFU/mL) in control samples and 108 CFU/mL when BPE or CE were added alone. Whereas, in the samples with the combined essential oils, the bacterium grew to 106–107 CFU/mL only. During the milk fermentation at 43 °C, E. fergusonii grew to approx. 109 CFU/mL in samples without treatment. However, it was not detected in samples containing mixed BPE with CE after 8, 10 and 12 h of fermentation. Subsequent storage at 25 °C resulted in undetectable levels of the bacterium in all the samples treated with BPE or CE after 24 h of storage. These results indicated that BPE in combination with CE reduced growth during fermentation and was bactericidal during storage.
Collapse
Affiliation(s)
- Betty A. Ogwaro
- Faculty of Science and Engineering, Wolverhampton School of Sciences, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (B.A.O.); (D.J.H.)
- Faculty of Science and Engineering, Research Institute for Healthcare Science, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
| | - Elizabeth A. O’Gara
- Faculty of Science and Engineering, Research Institute for Healthcare Science, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
- Faculty of Science and Engineering, School of Medicine and Clinical Practice, University of Wolverhampton, Wufruna Street, Wolverhampton WV1 1LY, UK
| | - David J. Hill
- Faculty of Science and Engineering, Wolverhampton School of Sciences, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (B.A.O.); (D.J.H.)
- Faculty of Science and Engineering, Research Institute for Healthcare Science, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
| | - Hazel Gibson
- Faculty of Science and Engineering, Wolverhampton School of Sciences, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK; (B.A.O.); (D.J.H.)
- Faculty of Science and Engineering, Research Institute for Healthcare Science, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, UK;
- Correspondence:
| |
Collapse
|
11
|
Anyogu A, Olukorede A, Anumudu C, Onyeaka H, Areo E, Adewale O, Odimba JN, Nwaiwu O. Microorganisms and food safety risks associated with indigenous fermented foods from Africa. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108227] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
12
|
|
13
|
Kohilavani, Wan Abdullah WN, Yang TA, Sifat SAD, Zzaman W. Development of Safe Halal Food Management System (SHFMS). Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Maleke MS, Adefisoye MA, Doorsamy W, Adebo OA. Processing, nutritional composition and microbiology of amasi: A Southern African fermented milk product. SCIENTIFIC AFRICAN 2021. [DOI: 10.1016/j.sciaf.2021.e00795] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
|
15
|
BOUDALIA S, BOUDEBBOUZ A, GUEROUI Y, BOUSBIA A, BENADA M, LEKSIR C, BOUKAABENE Z, SAIHI A, TOUAIMIA H, AÏT-KADDOUR A, CHEMMAM M. Characterization of traditional Algerian cheese “Bouhezza” prepared with raw cow, goat and sheep milks. FOOD SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1590/fst.35919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Sofiane BOUDALIA
- Université 8 Mai 1945 Guelma, Algérie; Université 8 Mai 1945 Guelma, Algérie
| | - Ali BOUDEBBOUZ
- Université 8 Mai 1945 Guelma, Algérie; Université 8 Mai 1945 Guelma, Algérie
| | | | - Aissam BOUSBIA
- Université 8 Mai 1945 Guelma, Algérie; Université 8 Mai 1945 Guelma, Algérie
| | | | - Choubaila LEKSIR
- Université 8 Mai 1945 Guelma, Algérie; Université 8 Mai 1945 Guelma, Algérie
| | | | - Aya SAIHI
- Université 8 Mai 1945 Guelma, Algérie
| | | | | | - Mabrouk CHEMMAM
- Université 8 Mai 1945 Guelma, Algérie; Université 8 Mai 1945 Guelma, Algérie
| |
Collapse
|
16
|
Aksu Mİ, Erdemir E, Oz F, Turan E, Gürses M. Effects of cemen paste with lyophilized red cabbage water extract on the quality characteristics of beef pastırma during processing and storage. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Muhammet İrfan Aksu
- Faculty of Agriculture Department of Food Engineering Eskişehir Osmangazi University Eskişehir Turkey
| | - Ebru Erdemir
- Health High School Department of Nutrition and Dietetics Ağrı İbrahim Çeçen University Ağrı Turkey
| | - Fatih Oz
- Faculty of Agriculture Department of Food Engineering Atatürk University Erzurum Turkey
| | - Emre Turan
- Faculty of Agriculture Department of Food Engineering Ordu University Ordu Turkey
| | - Mustafa Gürses
- Faculty of Agriculture Department of Food Engineering Atatürk University Erzurum Turkey
| |
Collapse
|
17
|
Behera SS, El Sheikha AF, Hammami R, Kumar A. Traditionally fermented pickles: How the microbial diversity associated with their nutritional and health benefits? J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103971] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
|
18
|
Mint Sidi Deoula M, El Kinany K, Hatime Z, Boudouaya HA, El Rhazi K. Meat and colorectal cancer in Middle Eastern and North African countries: update of literature review. Public Health Rev 2020; 41:7. [PMID: 32426173 PMCID: PMC7216610 DOI: 10.1186/s40985-020-00127-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/08/2020] [Indexed: 11/10/2022] Open
Abstract
Background This review discusses the findings from epidemiological studies that have examined the possible role of meat and colorectal cancer (CRC) risk in Middle Eastern and North African (MENA) countries. Methods We conducted a literature search in the PubMed, Clinical Trials, Google Scholar, Science Direct, and Cochrane databases for observational studies that investigated the association between meat and CRC risk in adults from the MENA region. Results Eleven studies were included in this review. For red meat overall, significant associations were found. Regarding beef meat intake, the study included found controversial results with OR = 0.18 (95% CI 0.03–0.09). A positive association was observed between chicken and CRC risk, at OR = 2.52 (95% CI 1.33–4.77) to OR = 4.00 (95% CI 1.53–10.41) to OR = 15.32 (95% CI 3.28–71.45). A significant association was observed between processed meat intake and CRC risk, OR = 9.08 (95% CI 1.02–80.58). Conclusion This is the first literature review which illustrated the association between meat consumption and CRC risk in MENA region. We concluded that these studies included in this review have been controversial and not sufficient to establish a clear relationship between CRC and meat consumption in the MENA region. Further studies are necessary to be carried out in this region, with a larger sample size and submit to rigorous criteria. This review will help researchers to improve the quality of future studies about the association between CRC and nutritional diet in general and meat in particular.
Collapse
Affiliation(s)
- Meimouna Mint Sidi Deoula
- 1Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco.,2Laboratory of Sciences Medical and Translational Research, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Khaoula El Kinany
- 1Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Zineb Hatime
- 1Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Hanae Abir Boudouaya
- 1Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Karima El Rhazi
- 1Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| |
Collapse
|
19
|
Microbial Safety of Milk Production and Fermented Dairy Products in Africa. Microorganisms 2020; 8:microorganisms8050752. [PMID: 32429521 PMCID: PMC7285323 DOI: 10.3390/microorganisms8050752] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/05/2020] [Accepted: 05/05/2020] [Indexed: 02/07/2023] Open
Abstract
In Africa, milk production, processing and consumption are integral part of traditional food supply, with dairy products being a staple component of recommended healthy diets. This review provides an overview of the microbial safety characteristics of milk production and fermented dairy products in Africa. The object is to highlight the main microbial food safety hazards in the dairy chain and to propose appropriate preventive and control measures. Pathogens of public health concern including Mycobacterium bovis, Brucella abortus and Coxiella burnettii, which have largely been eradicated in many developed nations, still persist in the dairy chain in Africa. Factors such as the natural antimicrobial systems in milk and traditional processing technologies, including fermentation, heating and use of antimicrobial additives, that can potentially contribute to microbial safety of milk and dairy products in Africa will be discussed. Practical approaches to controlling safety hazards in the dairy chain in Africa have been proposed. Governmental regulatory bodies need to set the necessary national and regional safety standards, perform inspections and put measures in place to ensure that the standards are met, including strong enforcement programs within smallholder dairy chains. Dairy chain actors would require upgraded knowledge and training in preventive approaches such as good agricultural practices (GAP), hazard analysis and critical control points (HACCP) design and implementation and good hygienic practices (GHPs). Food safety education programs should be incorporated into school curricula, beginning at the basic school levels, to improve food safety cognition among students and promote life-long safe food handling behaviour.
Collapse
|
20
|
Makinde OM, Ayeni KI, Sulyok M, Krska R, Adeleke RA, Ezekiel CN. Microbiological safety of ready‐to‐eat foods in low‐ and middle‐income countries: A comprehensive 10‐year (2009 to 2018) review. Compr Rev Food Sci Food Saf 2020; 19:703-732. [DOI: 10.1111/1541-4337.12533] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/01/2019] [Accepted: 01/07/2020] [Indexed: 12/11/2022]
Affiliation(s)
| | | | - Michael Sulyok
- Department of Agrobiotechnology (IFA–Tulln)Institute of Bioanalytics and Agro‐Metabolomics, University of Natural Resources and Life Sciences Vienna (BOKU) Tulln Austria
| | - Rudolf Krska
- Department of Agrobiotechnology (IFA–Tulln)Institute of Bioanalytics and Agro‐Metabolomics, University of Natural Resources and Life Sciences Vienna (BOKU) Tulln Austria
- Institute for Global Food Security, School of Biological SciencesQueen's University Belfast Belfast United Kingdom
| | - Rasheed A. Adeleke
- Department of MicrobiologyNorth‐West University Potchefstroom South Africa
| | - Chibundu N. Ezekiel
- Department of MicrobiologyBabcock University Ilishan Remo Nigeria
- Department of Agrobiotechnology (IFA–Tulln)Institute of Bioanalytics and Agro‐Metabolomics, University of Natural Resources and Life Sciences Vienna (BOKU) Tulln Austria
| |
Collapse
|
21
|
Adebiyi JA, Kayitesi E, Adebo OA, Changwa R, Njobeh PB. Food fermentation and mycotoxin detoxification: An African perspective. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106731] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
22
|
Ziadi M, Bouzaiene T, Lakhal S, Zaafouri K, Massoudi S, Dousset X, Hamdi M. Screening of lactic starter from Tunisian fermented vegetables and application for the improvement of caper (Capparis spinosa) fermentation through an experimental factorial design. ANN MICROBIOL 2019. [DOI: 10.1007/s13213-019-01519-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Abstract
Purpose
This study aims at designing a lactic starter for caper fermentation isolated from Tunisian fermented vegetables to improve the process and produce consistent and high-quality product.
Methods
In this study, the lactic starter was isolated by exploring the lactic acid bacteria (LAB) of Tunisian artisanal fermented vegetables. Identification was carried out by partial 16S rRNA gene sequencing. Screening was based on salt tolerance and antagonistic activities against Escherichia coli ATCC 10536 and Enterococcus faecalis ATCC 10541. Caper fermentation was optimized through a full factorial experimental design (23), by exploring three factors: starter inoculum size, NaCl concentration, and acetate content. Differences in pH values, Total aerobic mesophilic bacteria and LAB counts between the beginning and end of fermentation are selected as responses and corresponding regression coefficients were calculated.
Results
The lactic microbiota is mainly represented by Lactobacillus plantarum group. Based on salt tolerance and antimicrobial activity, the strain Lactobacillus plantarum F3 was selected as starter for caper fermentation. The effect of NaCl concentration, acetate content, and inoculum size on acidity, total aerobic mesophilic bacteria count, and LAB count after 1 week and 1 month of caper fermentation was studied. Depending on the fermentation time, either 1 week or 1 month, the initial conditions should comprise 0% acetate, 108 CFU/mL inoculum, and 5% NaCl for 1 week against 5% acetate, 107 CFU/mL inoculum, and 10% NaCl for 1 month lasting caper fermentation. A protocol for caper fermentation was set up ensuring hygienic quality and LAB viability.
Conclusion
Lb. plantarum F3 was selected as lactic starter for caper fermentation, and initial fermentation conditions were optimized through a full factorial design. This work has shown loss in LAB viability after 1 week of fermentation. Based on results obtained, an optimized fermentation protocol was set up. This protocol ensures LAB survival and high hygienic quality of the product.
Collapse
|
23
|
S Deoula M, El Kinany K, Huybrechts I, Gunter MJ, Hatime Z, Boudouaya HA, Benslimane A, Nejjari C, El Abkari M, Badre W, El Feydi AE, Afkir S, Abda N, El Rhazi K. Consumption of meat, traditional and modern processed meat and colorectal cancer risk among the Moroccan population: A large-scale case-control study. Int J Cancer 2019; 146:1333-1345. [PMID: 31525258 DOI: 10.1002/ijc.32689] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/19/2019] [Accepted: 08/30/2019] [Indexed: 12/11/2022]
Abstract
The current study aimed to investigate the relationship between red and white meat subtypes, processed meat (divided into traditional "Khlii, Kaddid" and industrially processed meat) and colorectal cancer (CRC) risk, considering CRC subsites, in Moroccan adults. A case-control study was conducted including 2,906 matched case-control pairs recruited from the five largest university hospitals in Morocco. Dietary data were collected through a validated Food Frequency Questionnaire (FFQ). Multivariable odds ratios (OR) and 95% confidence intervals (CI), for the association of CRC risk with meat consumption (high vs. low intake), were estimated using conditional logistic regression models, adjusted for relevant confounding variables. Overall, consumption of red meat was positively associated with colon cancer and CRC risk (OR = 1.23, 95% CI = 1.05-1.44; OR = 1.14, 95% CI = 1.02-1.27), respectively. In contrast, no significant association was observed between the consumption of red meat and rectal cancer risk (OR = 1.05, 95% = 0.90-1.23). Interestingly, while processed meat from industrial processes was positively associated with colon cancer, rectal cancer and CRC (OR = 1.61, 95% CI = 1.27-2.04; OR = 1.73, 95% CI = 1.34-2.23; OR = 1.67, 95% CI = 1.41-1.98), processed meat prepared using traditional methods was inversely associated with colon cancer and CRC risk (OR = 0.74, 95% CI = 0.57-0.98; OR = 0.77, 95% CI = 0.64-0.93), respectively. Furthermore, positive associations were observed between poultry intake and colon cancer risk among men (OR = 1.27, 95% CI = 1.01-1.59). Our study showed similar associations between the consumption of red meat and CRC risk in Morocco as in developed countries, while inverse associations were found for traditionally processed meat products. This is the first study to investigate the differential effects of traditional vs. westernized processed meat products in a developing country. Other studies are needed to confirm these findings and to understand the physiological pathways underlying these associations.
Collapse
Affiliation(s)
- Meimouna S Deoula
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Khaoula El Kinany
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Inge Huybrechts
- Section of Nutrition and Metabolism, International Agency for Research on Cancer, World Health Organization, Lyon, France
| | - Marc J Gunter
- Section of Nutrition and Metabolism, International Agency for Research on Cancer, World Health Organization, Lyon, France
| | - Zineb Hatime
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Hanae A Boudouaya
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Abdelilah Benslimane
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Chakib Nejjari
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Mohammed El Abkari
- Hepatic Gastroenterology Department, Faculty of Medicine and Pharmacy, Hassan II University Hospital of Fez, Digestive System Diseases Team, Fez, Morocco
| | - Wafaa Badre
- Department of Gastroenterology, University Hospital Center Ibn Rochd, Casablanca, Morocco
| | - Abdellah E El Feydi
- Hepato-Gastroenterology Service, Ibn Sina University Hospital Center, Rabat, Morocco
| | - Saîd Afkir
- Department of Oncology, Mohamed I University, Oujda, Morocco
| | - Naima Abda
- Department of Epidemiology, Mohamed I University, Oujda, Morocco
| | - Karima El Rhazi
- Department of Epidemiology and Public Health, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| |
Collapse
|
24
|
Meléndez J. Teaching Microbiology by Celebrating Traditional Foods and Cultures from Morocco and Perú. JOURNAL OF MICROBIOLOGY & BIOLOGY EDUCATION 2019; 20:jmbe-20-24. [PMID: 31160929 PMCID: PMC6508900 DOI: 10.1128/jmbe.v20i1.1685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 09/19/2018] [Indexed: 06/09/2023]
Abstract
According to a report published by the Center for Community College Student Engagement and others, global learning is considered one of the high-impact practices used to increase student engagement and motivation to learn. Engagement and motivation have also been linked to increased learning gains and improvement in the overall learning experience. Furthermore, global learning helps students explore other people's cultures and worldviews, which is an important skill for students to gain in order to compete and adapt to solve the problems of our global society. Here, I discuss two class activities that faculty can adopt to implement global learning in their courses, with the purpose of engaging and motivating students to learn microbiology while celebrating some traditions from Morocco and Perú. Students researched traditional fermented foods and drinks from Perú and Morocco. Then, they answered guided questions to help them link the food items to microbiological concepts learned in class. For example: normal flora and fermentation were learned as students researched the process of making a Peruvian drink called "chicha de jora," which is made from chewed corn that becomes fermented as it mixes with oral bacteria from saliva. While engaging in global learning, students learned some microbiology concepts; they passed the knowledge on to the campus community with poster presentations held during International Education Week. Based on students' feedback and participation, I can conclude that teaching microbiology using global learning was engaging, promoted student learning, and motivated students to learn.
Collapse
|
25
|
Baccouri O, Boukerb AM, Farhat LB, Zébré A, Zimmermann K, Domann E, Cambronel M, Barreau M, Maillot O, Rincé I, Muller C, Marzouki MN, Feuilloley M, Abidi F, Connil N. Probiotic Potential and Safety Evaluation of Enterococcus faecalis OB14 and OB15, Isolated From Traditional Tunisian Testouri Cheese and Rigouta, Using Physiological and Genomic Analysis. Front Microbiol 2019; 10:881. [PMID: 31105672 PMCID: PMC6491886 DOI: 10.3389/fmicb.2019.00881] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 04/05/2019] [Indexed: 12/13/2022] Open
Abstract
Lactic acid bacteria (LAB) strains OB14 and OB15 were isolated from traditional Tunisian fermented dairy products, Testouri cheese and Rigouta, respectively. They were identified as Enterococcus faecalis by the MALDI TOF-MS (matrix assisted laser desorption-ionization time of flight mass spectrometry) biotyper system and molecular assays (species-specific PCR). These new isolates were evaluated for probiotic properties, compared to E. faecalis Symbioflor 1 clone DSM 16431, as reference. The bacteria were found to be tolerant to the harsh conditions of the gastrointestinal tract (acidity and bile salt). They were low to moderate biofilm producers, can adhere to Caco-2/TC7 intestinal cells and strengthen the intestinal barrier through the increase of the transepithelial electrical resistance (TER). Susceptibility to ampicillin, vancomycin, gentamicin and erythromycin has been tested using the broth microdilutions method. The results demonstrated that E. faecalis OB14 and OB15 were sensitive to the clinically important ampicillin (MIC = 1 μg/mL) and vancomycin (MIC = 2 μg/mL) antibiotics. However, Whole Genome Sequencing (WGS) showed the presence of tetracycline resistance and cytolysin genes in E. faecalis OB14, and this led to high mortality of Galleria Mellonella larvae in the virulence test. Hierarchical cluster analysis by MALDI TOF-MS biotyper showed that E. faecalis OB15 was closely related to the E. faecalis Symbioflor 1 probiotic strain than to OB14, and this has been confirmed by WGS using the average nucleotide identity (ANI) and Genome-to-Genome Hybridization similarity methods. According to these results, E. faecalis OB15 seems to be reliable for future development as probiotic, in food or feed industry.
Collapse
Affiliation(s)
- Olfa Baccouri
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Tunis, Tunisia
| | - Amine Mohamed Boukerb
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | - Leila Ben Farhat
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Tunis, Tunisia
| | - Arthur Zébré
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | | | - Eugen Domann
- Institute of Medical Microbiology, German Centre for Infection Research, Justus-Liebig-University Giessen, Giessen, Germany
| | - Mélyssa Cambronel
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | - Magalie Barreau
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | - Olivier Maillot
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | | | | | - Mohamed Nejib Marzouki
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Tunis, Tunisia
| | - Marc Feuilloley
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| | - Ferid Abidi
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Tunis, Tunisia
| | - Nathalie Connil
- Laboratoire de Microbiologie Signaux et Microenvironnement (LMSM) EA 4312, Normandie Université – Université de Rouen, Évreux, France
| |
Collapse
|
26
|
Consumption of modern and traditional Moroccan dairy products and colorectal cancer risk: a large case control study. Eur J Nutr 2019; 59:953-963. [PMID: 30929068 DOI: 10.1007/s00394-019-01954-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 03/20/2019] [Indexed: 12/28/2022]
Abstract
PURPOSE The main objective of this study is to describe the association between the consumption of either traditional or modern dairy products or calcium intakes and the risk of colorectal cancer (CRC) in the adult Moroccan population. METHODS A case-control study was conducted in five Moroccan hospital centers. The study was matched on sex, age (± 5 years) and center. Data were collected using validated food frequency questionnaire (FFQ) taking into account different types of Moroccan dairy products. Conditional logistic regression models were used to assess the association between dairy products consumption, calcium intakes and CRC risk subtypes. In all statistical tests, the significance level was set at 0.05. RESULTS Among 1453 cases and 1453 matched controls, 50.7% were women and 49.3% were men. Milk ORb 0.84, 95% CI 0.74-0.96 and yogurt ORb 0.74, 95% CI 0.64-0.86 were inversely associated with CRC risk. Similar inverse associations were observed for traditional dairy products namely Lben ORb 0.77, 95% CI 0.67-0.88, Raib ORb 0.86, 95% CI 0.76-0.96 and Jben ORb 0.77, 95% CI 0.67-0.88. The dairy calcium intake was inversely associated to CRC overall ORb 0.83, 95% CI 0.74-0.93. CONCLUSIONS Our study supports previous international evidence and suggests that individuals who have a high intake of either modern or traditional dairy products are at lower risk for CRC. These findings should be further confirmed by longitudinal data and studies investigating potential pathways involved.
Collapse
|
27
|
Benlacheheb R, Becila S, Sentandreu MA, Hafid K, Boudechicha HR, Boudjellal A. El Gueddid, a traditional Algerian dried salted meat: Physicochemical, microbiological characteristics and proteolysis intensity during its manufacturing process and ripening. FOOD SCI TECHNOL INT 2019; 25:347-355. [DOI: 10.1177/1082013219825892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
El Gueddid is a traditional salted and dried meat with high popularity in Algeria. It is used as an ingredient in various dishes. In this study, different samples of El Gueddid were analyzed at different processing times to follow up their microbiological and physicochemical properties. Changes in the protein profile were also demonstrated by electrophoretic study of myofibrillar proteins. Microbiological determinations included the total viable count, coliforms, Staphylococci, lactic acid bacteria, yeasts, and molds, whereas physicochemical properties were characterized by pH, moisture, salt content and water activity. The results showed that microbial profiles were elevated for all the studied micro-organisms. Staphylococci and lactic acid bacteria were the most abundant micro-organisms in the product. Total coliforms were found in low numbers in fresh meat, being eliminated at the post salting stage of process. The physicochemical characteristics showed that the moisture content decreased in the product during the drying period. The pH also decreased during the drying period, then remained almost unchanged during the rest of the ripening period. Moreover, El Gueddid showed low water activity and high salt content. One of the most important changes in the profile of myofibrillar proteins was a reduction in the myosin heavy chain content.
Collapse
Affiliation(s)
- Radhia Benlacheheb
- Equipe MaQuaV, Laboratoire BioQuAI, Institut de Nutrition d’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université des Frères Mentouri Constantine 1, Algeria
| | - Samira Becila
- Equipe MaQuaV, Laboratoire BioQuAI, Institut de Nutrition d’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université des Frères Mentouri Constantine 1, Algeria
| | | | - Kahina Hafid
- Equipe MaQuaV, Laboratoire BioQuAI, Institut de Nutrition d’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université des Frères Mentouri Constantine 1, Algeria
| | - Hiba-Ryma Boudechicha
- Equipe MaQuaV, Laboratoire BioQuAI, Institut de Nutrition d’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université des Frères Mentouri Constantine 1, Algeria
| | - Abdelghani Boudjellal
- Equipe MaQuaV, Laboratoire BioQuAI, Institut de Nutrition d’Alimentation et des Technologies Agro-Alimentaires (INATAA), Université des Frères Mentouri Constantine 1, Algeria
| |
Collapse
|
28
|
Agyei D, Owusu-Kwarteng J, Akabanda F, Akomea-Frempong S. Indigenous African fermented dairy products: Processing technology, microbiology and health benefits. Crit Rev Food Sci Nutr 2019; 60:991-1006. [DOI: 10.1080/10408398.2018.1555133] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Dominic Agyei
- Department of Food Science, University of Otago, Dunedin, New Zealand
| | - James Owusu-Kwarteng
- Department of Food Science and Technology, University of Energy and Natural Resources, Sunyani, Ghana
| | - Fortune Akabanda
- Department of Applied Biology, University for Development Studies, Navrongo, Ghana
| | - Samuel Akomea-Frempong
- Department of Food Science and Technology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| |
Collapse
|
29
|
Alegbeleye OO, Singleton I, Sant'Ana AS. Sources and contamination routes of microbial pathogens to fresh produce during field cultivation: A review. Food Microbiol 2018; 73:177-208. [PMID: 29526204 PMCID: PMC7127387 DOI: 10.1016/j.fm.2018.01.003] [Citation(s) in RCA: 252] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/31/2017] [Accepted: 01/02/2018] [Indexed: 12/17/2022]
Abstract
Foodborne illness resulting from the consumption of contaminated fresh produce is a common phenomenon and has severe effects on human health together with severe economic and social impacts. The implications of foodborne diseases associated with fresh produce have urged research into the numerous ways and mechanisms through which pathogens may gain access to produce, thereby compromising microbiological safety. This review provides a background on the various sources and pathways through which pathogenic bacteria contaminate fresh produce; the survival and proliferation of pathogens on fresh produce while growing and potential methods to reduce microbial contamination before harvest. Some of the established bacterial contamination sources include contaminated manure, irrigation water, soil, livestock/ wildlife, and numerous factors influence the incidence, fate, transport, survival and proliferation of pathogens in the wide variety of sources where they are found. Once pathogenic bacteria have been introduced into the growing environment, they can colonize and persist on fresh produce using a variety of mechanisms. Overall, microbiological hazards are significant; therefore, ways to reduce sources of contamination and a deeper understanding of pathogen survival and growth on fresh produce in the field are required to reduce risk to human health and the associated economic consequences.
Collapse
Affiliation(s)
| | - Ian Singleton
- School of Applied Sciences, Sighthill Campus, Edinburgh Napier University, Edinburgh, UK
| | - Anderson S Sant'Ana
- Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, São Paulo, Brazil.
| |
Collapse
|
30
|
Culture and food security. GLOBAL FOOD SECURITY-AGRICULTURE POLICY ECONOMICS AND ENVIRONMENT 2018. [DOI: 10.1016/j.gfs.2018.02.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
31
|
El Kinany K, Deoula M, Hatime Z, Bennani B, El Rhazi K. Dairy products and colorectal cancer in middle eastern and north African countries: a systematic review. BMC Cancer 2018; 18:233. [PMID: 29490616 PMCID: PMC5831700 DOI: 10.1186/s12885-018-4139-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 02/16/2018] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND This systematic review was conducted to explain the association between dairy products and colorectal cancer (CRC) risk in Middle Eastern and North African countries (MENA). METHODS The database consulted were PubMed, Clinical Trials, and Cochrane to extract the relevant studies published till the 31stof December 2016, using inclusion and exclusion criteria according to Prisma Protocol. The characteristics of these studies comprised the consumption of all types of dairy products in relation to CRC risk. RESULTS Seven studies were included in this review. For dairy products overall, no significant association was found. Regarding modern dairy products, included studies found controversial results with OR = 9.88 (95% CI: 3.80-24.65) and ORa = 0.14 (95% CI: 0.02-0.71). A positive association was reported between traditional dairy products and CRC risk, to OR = 18.66 (95% CI: 3.06-113.86) to OR = 24 (95% CI: 1.74-330.82) to ORa = 1.42 (95% CI: 0.62-3.25), ptrend = 0.03. Calcium was inversely associated with the CRC risk with ORa = 0.08 (95% CI: 0.04-0.17). CONCLUSION This is the first systematic review which illustrated the association between dairy consumption and CRC risk in MENA region. The results were inconsistent and not always homogeneous. Further specified studies may be warranted to address the questions about the association between CRC and dairy products in a specific context of MENA region.
Collapse
Affiliation(s)
- K El Kinany
- Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco. .,Faculty of Science Dhar Mehraz, Laboratory of Microbiology and Molecular Biology, Fez, Morocco.
| | - M Deoula
- Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - Z Hatime
- Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - B Bennani
- Laboratory of Microbiology and Molecular Biology, Faculty of Medicine and Pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| | - K El Rhazi
- Department of Epidemiology and Public Health, Faculty of Medicine and pharmacy of Fez, Sidi Mohamed Ben Abdellah University, Fez, Morocco
| |
Collapse
|
32
|
Kavitake D, Kandasamy S, Devi PB, Shetty PH. Recent developments on encapsulation of lactic acid bacteria as potential starter culture in fermented foods – A review. FOOD BIOSCI 2018. [DOI: 10.1016/j.fbio.2017.11.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
33
|
Mattiello S, Caroprese M, Crovetto GM, Fortina R, Martini A, Martini M, Parisi G, Russo C, Severini C, Zecchini M. Typical edible non-dairy animal products in Africa from local animal resources. ITALIAN JOURNAL OF ANIMAL SCIENCE 2018. [DOI: 10.1080/1828051x.2017.1348915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Silvana Mattiello
- Dipartimento di Medicina Veterinaria–Laboratorio di Benessere animale, Etologia applicata e Produzioni sostenibili, University of Milano, Milano, Italy
| | - Mariangela Caroprese
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, University of Foggia, Foggia, Italy
| | | | - Riccardo Fortina
- Dipartimento di Scienze Agrarie, Forestali e Alimentari and CISAO–Centro Interdipartimentale di Ricerca e Cooperazione Tecnico-Scientifica con l’Africa, University of Torino, Torino, Italy
| | - Andrea Martini
- Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente, University of Firenze, Firenze, Italy
| | - Mina Martini
- Dipartimento di Scienze Veterinarie, University of Pisa, Pisa, Italy
| | - Giuliana Parisi
- Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente, University of Firenze, Firenze, Italy
| | - Claudia Russo
- Dipartimento di Scienze Veterinarie, University of Pisa, Pisa, Italy
| | - Carla Severini
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, University of Foggia, Foggia, Italy
| | - Massimo Zecchini
- Dipartimento di Medicina Veterinaria–Laboratorio di Benessere animale, Etologia applicata e Produzioni sostenibili, University of Milano, Milano, Italy
| | | |
Collapse
|
34
|
Mattiello S, Caroprese M, Matteo CG, Fortina R, Martini A, Martini M, Parisi G, Russo C, Zecchini M. Typical dairy products in Africa from local animal resources. ITALIAN JOURNAL OF ANIMAL SCIENCE 2017. [DOI: 10.1080/1828051x.2017.1401910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Silvana Mattiello
- Dipartimento di Medicina veterinaria – Laboratorio di Benessere animale, Etologia applicata e Produzioni sostenibili, University of Milan, Milano, Italy
| | - Mariangela Caroprese
- Dipartimento di Scienze Agrarie, degli Alimenti e dell'Ambiente, University of Foggia, Foggia, Italy
| | | | - Riccardo Fortina
- Dipartimento di Scienze Agrarie, Forestali e Alimentari and CISAO – Centro Interdipartimentale di Ricerca e Cooperazione Tecnico-Scientifica con l’Africa, University of Torino, Torino, Italy
| | - Andrea Martini
- Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente, University of Firenze, Firenze, Italy
| | - Mina Martini
- Dipartimento di Scienze Veterinarie, University of Pisa, Pisa, Italy
| | - Giuliana Parisi
- Dipartimento di Scienze delle Produzioni Agroalimentari e dell'Ambiente, University of Firenze, Firenze, Italy
| | - Claudia Russo
- Dipartimento di Scienze Veterinarie, University of Pisa, Pisa, Italy
| | - Massimo Zecchini
- Dipartimento di Medicina veterinaria – Laboratorio di Benessere animale, Etologia applicata e Produzioni sostenibili, University of Milan, Milano, Italy
| | | |
Collapse
|
35
|
Wilson RT. Traditional milk processing and value-added dairy products in selected Arab countries. INT J DAIRY TECHNOL 2017. [DOI: 10.1111/1471-0307.12399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
36
|
Multi-mycotoxin contamination of couscous semolina commercialized in Morocco. Food Chem 2017; 214:440-446. [DOI: 10.1016/j.foodchem.2016.07.098] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 11/17/2022]
|
37
|
Adeyeye SAO. Safety Issues in Traditional West African Foods: A Critical Review. JOURNAL OF CULINARY SCIENCE & TECHNOLOGY 2016. [DOI: 10.1080/15428052.2016.1225533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
38
|
Alimi BA. Risk factors in street food practices in developing countries: A review. FOOD SCIENCE AND HUMAN WELLNESS 2016. [DOI: 10.1016/j.fshw.2016.05.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
39
|
Majid M, Rasoul S, Raziyeh Z, Allal H, Philippe T, Frank D, Mustapha IA. Optimization of biomass production of Acetobacter pasteurianus KU710511 as a potential starter for fruit vinegar production. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajb2016.15323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
40
|
Alimi B, Oyeyinka A, Olohungbebe L. Socio-economic characteristics and willingness of consumers to pay for the safety of fura de nunu in Ilorin, Nigeria. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2016. [DOI: 10.3920/qas2014.0494] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- B.A. Alimi
- Department of Food, Agricultural and Bio-Engineering, Kwara State University, Malete, P.M.B. 1530, Ilorin, Nigeria
| | - A.T. Oyeyinka
- Department of Food, Agricultural and Bio-Engineering, Kwara State University, Malete, P.M.B. 1530, Ilorin, Nigeria
| | - L.O. Olohungbebe
- Center for Community Development, Kwara State University, P.M.B. 1530, Ilorin, Nigeria
| |
Collapse
|
41
|
Ren WW, Bekhit AEDA, Li F, Yang HY, Jiang XF, Zhang W, Kong LM. Physicochemical Properties of Pastirma from Horse Meat, Beef, Mutton and Pork. J FOOD QUALITY 2015. [DOI: 10.1111/jfq.12152] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Wen-Wen Ren
- Department of Food Science and Pharmacy; Xinjiang Agricultural University; Urumqi 830052 China
| | | | - Fang Li
- Department of Food and Biotechnology; Xinjiang Institute of Light Industry Technology; Urumqi China
| | - Hai-Yan Yang
- Department of Food Science and Pharmacy; Xinjiang Agricultural University; Urumqi 830052 China
| | - Xiao-Feng Jiang
- Department of Food Science and Pharmacy; Xinjiang Agricultural University; Urumqi 830052 China
| | - Wen Zhang
- Department of Food Science and Pharmacy; Xinjiang Agricultural University; Urumqi 830052 China
| | - Ling-Ming Kong
- Department of Food Science and Pharmacy; Xinjiang Agricultural University; Urumqi 830052 China
| |
Collapse
|
42
|
Kotb E. The biotechnological potential of subtilisin-like fibrinolytic enzyme from a newly isolated Lactobacillus plantarum KSK-II in blood destaining and antimicrobials. Biotechnol Prog 2014; 31:316-24. [PMID: 25504817 DOI: 10.1002/btpr.2033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 11/06/2014] [Indexed: 11/08/2022]
Abstract
An antimicrobial oxidative- and SDS-stable fibrinolytic alkaline protease designated as KSK-II was produced by Lactobacillus plantarum KSK-II isolated from kishk, a traditional Egyptian food. Maximum enzyme productivity was obtained in medium containing 1% lactose and 0.5% soybean flour as carbon and nitrogen sources, respectively. Purification of enzyme increased its specific activity to 1,140-fold with a recovery of 33% and molecular weight of 43.6 kDa. Enzyme activity was totally lost in the presence of ethylenediaminetetraacetic acid and was restored after addition of Fe(2+) suggesting that KSK-II is a metalloprotease and Fe(2+) acts as cofactor. Enzyme hydrolyzed not only the natural proteins but also synthetic substrates, particularly Suc-Ala-Ala-Pro-Phe-pNA. KSK-II can hydrolyze the Lys-X easier than Arg-X; thus, it was considered as a subtilisin-family protease. Its apparent Km , Vmax , and Kcat were 0.41 mM, 6.4 µmol mg(-1) min(-1) , and 28.0 s(-1) , respectively. KSK-II is industrially important from the perspectives of its maximal activity at 50°C (stable up to 70°C), ability to function at alkaline pH (10.0), stability at broad pH ranges (7.5-12.0) in addition to its stability toward SDS, H2 O2 , organic solvents, and detergents. We emphasize for the first time the potential of fibrinolytic activity for alkaline proteases used in detergents especially in blood destaining.
Collapse
Affiliation(s)
- Essam Kotb
- Research Laboratory of Bacteriology, Dept. of Microbiology, Faculty of Science, Zagazig University, Zagazig, Egypt, 44519
| |
Collapse
|