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Park J, Heo S, Lee G, Hong SW, Jeong DW. Bacterial community of kimchi added with seafood based on culture-dependent investigations. Heliyon 2024; 10:e34153. [PMID: 39071702 PMCID: PMC11277766 DOI: 10.1016/j.heliyon.2024.e34153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/24/2024] [Accepted: 07/04/2024] [Indexed: 07/30/2024] Open
Abstract
Previously, microbial communities of five commercial kimchi added with seafood and one kimchi without seafood were analyzed using a culture-independent (CI) method. In the current study, microbial communities of the same samples were analyzed using a culture-dependent (CD) method with two media: tryptic soy agar (TSA) and Lactobacilli de Man, Rogosa and Sharpe (MRS) agar. MRS agar showed a higher proportion of lactic acid bacteria, while TSA showed a higher proportion of Bacillus species. Leuconostoc mesenteroides became dominant over time except in kimchi added with hongeu (HBK, okamejei kenojei). In the case of HBK, Bacillus was dominant. The low pH of HBK was confirmed by cell size and heat treatment under pH 4-7 conditions that Bacillus could be present in the form of spores. With the CD method, only Lactococcus lactis, Leu. citreum, and Weissella cibaria were detected. With the CI method, only Pediococcus inopinatus was detected. A notable finding was that Leu. mesenteroides was more abundant than Latilactobacillus sakei with the CD method, whereas it was similar or lower with the CI method. This discrepancy was confirmed to be due to different rates of DNA recovered from the two strains. This shows that the assay method may influence the detection of these two strains.
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Affiliation(s)
- Junghyun Park
- Department of Food and Nutrition, Dongduk Women's University, Seoul, 02748, Republic of Korea
| | - Sojeong Heo
- Department of Food and Nutrition, Dongduk Women's University, Seoul, 02748, Republic of Korea
| | - Gawon Lee
- Department of Food and Nutrition, Dongduk Women's University, Seoul, 02748, Republic of Korea
| | - Sung Wook Hong
- Technology Innovation Research Division, World Institute of Kimchi, Gwangju, 61755, Republic of Korea
| | - Do-Won Jeong
- Department of Food and Nutrition, Dongduk Women's University, Seoul, 02748, Republic of Korea
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Lee BH, Huang CH, Liu TY, Liou JS, Hou CY, Hsu WH. Microbial Diversity of Anaerobic-Fermented Coffee and Potential for Inhibiting Ochratoxin-Produced Aspergillus niger. Foods 2023; 12:2967. [PMID: 37569236 PMCID: PMC10418422 DOI: 10.3390/foods12152967] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/13/2023] Open
Abstract
Coffee flavor considerably depends on the fermentation process, with contributing factors including fermentation temperature, oxygen concentration, and microbial diversity. Efficient controlling of the fermentation can improve the quality of coffee beverages. Therefore, several studies on coffee fermentation processes have been conducted in various regions. The objective of this study was to assess the microbial diversity of coffee beans undergoing anaerobic fermentation at various temperatures (4 °C or 37 °C) and fermentation durations (12 h or 36 h) using full-length 16S rRNA sequencing. This analysis aimed to evaluate the inhibitory effects of the fermented metabolites against ochratoxin-producing Aspergillus niger. From our results, Acetobacter was identified as the dominant microbial community at higher fermentation temperatures, whereas Leuconostoc and Gluconobacter were the dominant genera at lower temperatures. However, at lower temperatures, changes in microbial communities were relatively slow. This study expands our knowledge of the microbial diversity involved in the anaerobic fermentation of coffee beans in Taiwan. The findings of this study can be used in future research to cultivate microorganisms linked to the quality and improve the quality of coffee beverages through fermentation.
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Affiliation(s)
- Bao-Hong Lee
- Department of Horticulture, National Chiayi University, Chiayi 600355, Taiwan; (B.-H.L.); (C.-H.H.)
| | - Cheng-Hao Huang
- Department of Horticulture, National Chiayi University, Chiayi 600355, Taiwan; (B.-H.L.); (C.-H.H.)
| | - Tsung-Yu Liu
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 701401, Taiwan; (T.-Y.L.); (J.-S.L.)
| | - Jung-Shiang Liou
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 701401, Taiwan; (T.-Y.L.); (J.-S.L.)
| | - Chih-Yao Hou
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 811213, Taiwan;
| | - Wei-Hsuan Hsu
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 701401, Taiwan; (T.-Y.L.); (J.-S.L.)
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Grispoldi L, Ianni F, Blasi F, Pollini L, Crotti S, Cruciani D, Cenci-Goga BT, Cossignani L. Apple Pomace as Valuable Food Ingredient for Enhancing Nutritional and Antioxidant Properties of Italian Salami. Antioxidants (Basel) 2022; 11:antiox11071221. [PMID: 35883713 PMCID: PMC9311962 DOI: 10.3390/antiox11071221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 02/01/2023] Open
Abstract
Nowadays, food fortification with bioactive compounds deriving from agri-food waste is of great interest all over the world. In this work, apple pomace (AP), the most abundant by-product of apple juice manufacturing, was characterised by chemical, chromatographic and spectrophotometric analyses. AP showed valuable antioxidant activity, due to the presence of phenolic compounds (8.56 mg gallic acid equivalents/g), including quercetin-3-O-galactoside, quercetin-3-O-arabinofuranoside, and phloridzin. Dried AP, at 7% and 14%, was added to pork meat to produce Italian salami, then subjected to 25 days of ripening. Physicochemical, colorimetric and microbiological analyses were carried out at days 0, 5, 11, 19 and 25, while nutritional and sensory evaluations were performed at the end of the ripening. The overall acceptability was slightly higher for 7% AP compared to 14% AP sample, and generally the replacement of a percentage of meat with apple pomace allowed the production of salami with sensory properties comparable to those obtained with classic recipes. The improved fibre and phenol content, together with the lower fat and calories, represent the most interesting characteristics of fortified salami. The results confirm that the addition of AP represents a valid approach to adding healthy compounds to salami.
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Affiliation(s)
- Luca Grispoldi
- Department of Veterinary Medicine, University of Perugia, 06126 Perugia, Italy;
| | - Federica Ianni
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy; (F.I.); (L.P.); (L.C.)
| | - Francesca Blasi
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy; (F.I.); (L.P.); (L.C.)
- Correspondence: (F.B.); (B.T.C.-G.); Tel.: +39-075-585-7954 (F.B.); +39-075-585-7929 (B.T.C.-G.)
| | - Luna Pollini
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy; (F.I.); (L.P.); (L.C.)
| | - Silvia Crotti
- Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy; (S.C.); (D.C.)
| | - Deborah Cruciani
- Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche “Togo Rosati”, 06126 Perugia, Italy; (S.C.); (D.C.)
| | - Beniamino Terzo Cenci-Goga
- Department of Veterinary Medicine, University of Perugia, 06126 Perugia, Italy;
- Correspondence: (F.B.); (B.T.C.-G.); Tel.: +39-075-585-7954 (F.B.); +39-075-585-7929 (B.T.C.-G.)
| | - Lina Cossignani
- Department of Pharmaceutical Sciences, University of Perugia, 06126 Perugia, Italy; (F.I.); (L.P.); (L.C.)
- Center for Perinatal and Reproductive Medicine, University of Perugia, Santa Maria della Misericordia University Hospital, 06132 Perugia, Italy
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Grispoldi L, Chalias A, Barzi E, Pecorari L, Tassinari M, Saraiva C, García-Díez J, Karama M, El-Ashram S, Traina G, Cenci-Goga BT. Effect of packaging and storage conditions on some quality traits of bovine meat. Ital J Food Saf 2022; 11:10038. [PMID: 35795465 PMCID: PMC9251871 DOI: 10.4081/ijfs.2022.10038] [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: 08/14/2021] [Accepted: 01/24/2022] [Indexed: 12/02/2022] Open
Abstract
Packaging is considered one of the most interesting technological aspects of food production and is a constantly evolving subject in food production. The type of packaging is important for the quality and safety of the product and for the visual appearance of the product to be immediately evaluated by consumers. The purpose of this study was to investigate the effect of four different types of modified atmosphere packaging (ATM) and vacuum packaging (VP) currently used by a company in central Italy, on the main qualitative characteristics of beef. For these two traditional and two new solutions with reduced environmental impact and compostable were evaluated. For each type of packaging, two different products were analyzed: steaks and hamburgers. The samples, immediately after production, were transported to the laboratory in refrigerated containers. Several parameters (color, pH, water holding capacity, drip loss, and microbiological characteristics) were evaluated at time 0 and after 7 (T7), 14 (T14) and 21 days (T21) of storage in the dark and at refrigeration temperature (+4°C ± 2°C). The results showed that the two types of packaging have very similar effects on the water-retaining capacity of the steaks. More noticeable differences were recorded by the colorimetric analysis: for both steaks and hamburgers, the products packaged in the traditional packaging appeared brighter and redder than those packaged in the new alternatives. The microbiological analysis of the steaks showed higher values in the “new” packaging. The formation of abundant ropy slime was observed in one of the samples in the “new” modified atmosphere package at T21. The results of this study showed that the technological characteristics (in particular, the color) and the microbiological characteristics of the steaks and hamburgers were better in “old” packaging, with a better appearance and a longer shelf life. The results obtained show how the research for eco-sustainable products for packaging must be addressed, taking into account the effect of the materials on the qualitative and hygienic- sanitary characteristics of the meat.
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Chen S, Liu S, Ma J, Xu X, Wang H. Evaluation of the spoilage heterogeneity of meat-borne Leuconostoc mesenteroides by metabonomics and in-situ analysis. Food Res Int 2022; 156:111365. [DOI: 10.1016/j.foodres.2022.111365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 01/23/2023]
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Ultrasound-Assisted Extraction and Characterization of Polyphenols from Apple Pomace, Functional Ingredients for Beef Burger Fortification. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27061933. [PMID: 35335297 PMCID: PMC8956034 DOI: 10.3390/molecules27061933] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 12/19/2022]
Abstract
Currently, there is an increasing interest to valorise agri-food waste containing bioactive compounds with potential health benefits. In this paper, the recovery of functional molecules from apple pomace, the most abundant by-product of the apple processing industry, was carried out by ultrasound-assisted extraction (UAE) on fresh and freeze-dried samples. UAE extract, obtained by double extraction of freeze-dried apple pomace, was subjected to chromatographic and spectrophotometric characterization. It showed good levels of total phenol content, high antioxidant activity, and interesting antioxidant compounds (quercetin derivatives, chlorogenic acid, phloridzin). Subsequently, freeze-dried apple pomace, containing 40.19% of dietary fibre, was used as a fortifying agent for beef burgers (4% and 8%). The results concerning colour and sensory analysis of the fortified products were graded even better than the control (0%). The improved fibre and phenol content, together with the neutral flavour, represent the most interesting characteristics of fortified burgers. The results confirm that UAE was a successful technique for extracting phenol compounds and that the addition of apple pomace represents a valid approach to increase the health properties and palatability of beef burgers, including for consumers who do not like meat.
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Samelis J, Kakouri A. Growth Inhibitory and Selective Pressure Effects of Sodium Diacetate on the Spoilage Microbiota of Frankfurters Stored at 4 °C and 12 °C in Vacuum. Foods 2021; 10:E74. [PMID: 33401509 PMCID: PMC7824339 DOI: 10.3390/foods10010074] [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: 11/24/2020] [Revised: 12/21/2020] [Accepted: 12/25/2020] [Indexed: 01/01/2023] Open
Abstract
This study evaluated microbial growth in commercial frankfurters formulated with 1.8% sodium lactate (SL) singly or combined with 0.25% sodium diacetate (SDA), vacuum-packaged (VP) and stored at 4 °C and 12 °C. Standard frankfurters without SDA, containing 0.15% SL, served as controls (CN). Lactic acid bacteria (LAB) were the exclusive spoilers in all treatments at both storage temperatures. However, compared to the CN and SL treatments, SL + SDA delayed growth of LAB by an average of 5.1 and 3.1 log units, and 3.0 and 2.0 log units, respectively, after 30 and 60 days at 4 °C. On day 90, the SL + SDA frankfurters were unspoiled whereas the SL and CN frankfurters had spoiled on day 60 and day 30 to 60, respectively. At 12 °C, LAB growth was similar in all treatments after day 15, but strong defects developed in the CN and SL frankfurters only. Differential spoilage patterns were associated with a major reversal of the LAB biota from gas- and slime-producing Leuconostoc mesenteroides and Leuconostoc carnosum in the CN and SL frankfurters to Lactobacillus sakei/curvatus in the SL + SDA frankfurters. Thus, SL + SDA extends the retail shelf life of VP frankfurters by delaying total LAB growth and selecting for lactobacilli with a milder cured meat spoilage potential than leuconostocs, particularly under refrigeration.
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Affiliation(s)
- John Samelis
- Hellenic Agricultural Organization ‘DIMITRA’, Dairy Research Department, 45221 Katsikas, Ioannina, Greece;
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