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פותח על ידי קלירמאש פתרונות בע"מ -
Dynamics of bacterial communities in alfalfa and mung bean sprouts during refrigerated conditions
Year:
2019
Authors :
אבו-פאני, לארין
;
.
זרקא, עמרי
;
.
סלע, שלמה
;
.
פינטו, רבקה
;
.
קרופיצקי, יוליה
;
.
קשרי, ג'יטנדרה
;
.
Volume :
84
Co-Authors:

   Achmon, Y., Department of Food Science, Institute for Postharvest and Food Sciences, The Volcani Center, Agriculture Research Organization, Rishon-LeZion, Israel, Department of Biotechnology and Food Engineering, Guangdong Technion Israel Institute of Technology, Shantou, China; Bauer, T.S., Department of Food Science, Institute for Postharvest and Food Sciences, The Volcani Center, Agriculture Research Organization, Rishon-LeZion, Israel, Department of Biochemistry and Food Science, Hebrew University of Jerusalem, Israel; Maler, I., The Laboratory of Food Microbiology, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan50250, Israel;

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Sprouts are considered a healthy ready-to-eat food and has gained popularity in recent years. The objective of the present study was to determine the dynamics of sprouts' microbiome during cold storage to the end of their shelf-life at home. The microbiological quality of fresh alfalfa (Medicago sativa) and mung bean (Vigna radiata) sprouts from two commercial brands was tested and the number of APC ranges from 5.0 to 8.7 log CFU/g in alfalfa and 6.7 to 9.3 log CFU/g in mung bean sprouts. In the case of alfalfa, but not mung beans, there were differences in the mean numbers of APC between the two brands. The number of coliform bacteria ranges from 4.3 to 7.7 log CFU/g in alfalfa and 4.1 to 8.1 log CFU/g in mung bean sprouts. Four independent batches of sprouts were used for DNA preparation and were sampled immediately after purchase and once a week during subsequent storage in refrigerator until the end of their shelf-life. Microbial population of the sprouts was determined using next generation sequencing of 16S rRNA amplicons. Alfalfa sprouts were dominated by Pseudomonas throughout the storage time with relative abundance of >60% at 3 weeks. Fresh mung bean sprouts were dominated by both Pseudomonas and Pantoea, but Pantoea became the dominant taxa after 2 weeks of storage, with >46% of relative abundance. The bacterial communities associated with sprouts were largely dependent on the sprout type, and less dependent on the brand. The species richness and diversity declined during storage and the development of spoilage. Among the 160 genera identified on sprouts, 23 were reported to contain known spoilage-associated species and 30 genera comprise potential human pathogenic species. This study provides new insight into the microbiome dynamics of alfalfa and mung bean sprouts during cold storage. © 2019 Elsevier Ltd

Note:
Related Files :
16S rRNA amplicon
cold storage
microbiome
Spoilage
sprout
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.fm.2019.103261
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
42794
Last updated date:
02/03/2022 17:27
Creation date:
23/07/2019 11:08
Scientific Publication
Dynamics of bacterial communities in alfalfa and mung bean sprouts during refrigerated conditions
84

   Achmon, Y., Department of Food Science, Institute for Postharvest and Food Sciences, The Volcani Center, Agriculture Research Organization, Rishon-LeZion, Israel, Department of Biotechnology and Food Engineering, Guangdong Technion Israel Institute of Technology, Shantou, China; Bauer, T.S., Department of Food Science, Institute for Postharvest and Food Sciences, The Volcani Center, Agriculture Research Organization, Rishon-LeZion, Israel, Department of Biochemistry and Food Science, Hebrew University of Jerusalem, Israel; Maler, I., The Laboratory of Food Microbiology, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan50250, Israel;

Dynamics of bacterial communities in alfalfa and mung bean sprouts during refrigerated conditions

Sprouts are considered a healthy ready-to-eat food and has gained popularity in recent years. The objective of the present study was to determine the dynamics of sprouts' microbiome during cold storage to the end of their shelf-life at home. The microbiological quality of fresh alfalfa (Medicago sativa) and mung bean (Vigna radiata) sprouts from two commercial brands was tested and the number of APC ranges from 5.0 to 8.7 log CFU/g in alfalfa and 6.7 to 9.3 log CFU/g in mung bean sprouts. In the case of alfalfa, but not mung beans, there were differences in the mean numbers of APC between the two brands. The number of coliform bacteria ranges from 4.3 to 7.7 log CFU/g in alfalfa and 4.1 to 8.1 log CFU/g in mung bean sprouts. Four independent batches of sprouts were used for DNA preparation and were sampled immediately after purchase and once a week during subsequent storage in refrigerator until the end of their shelf-life. Microbial population of the sprouts was determined using next generation sequencing of 16S rRNA amplicons. Alfalfa sprouts were dominated by Pseudomonas throughout the storage time with relative abundance of >60% at 3 weeks. Fresh mung bean sprouts were dominated by both Pseudomonas and Pantoea, but Pantoea became the dominant taxa after 2 weeks of storage, with >46% of relative abundance. The bacterial communities associated with sprouts were largely dependent on the sprout type, and less dependent on the brand. The species richness and diversity declined during storage and the development of spoilage. Among the 160 genera identified on sprouts, 23 were reported to contain known spoilage-associated species and 30 genera comprise potential human pathogenic species. This study provides new insight into the microbiome dynamics of alfalfa and mung bean sprouts during cold storage. © 2019 Elsevier Ltd

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