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  1. Article ; Online: Quality Improvement and Shelf-Life Extension of Iced Nile Tilapia Fillets Using Natural Garlic Extract

    Jiménez-Ruíz, Edgar Iván / Ocaño-Higuera, Víctor Manuel / Valdez-Hurtado, Santiago / Cruz-Guzmán, José Alberto / Otero-León, Cesar Benjamín / Ruíz-Cruz, Saúl / Garzón-García, Alba Mery / Barrales-Cureño, Hebert Jair / Canizales-Rodríguez, Dalila Fernanda / Pérez-Martínez, Cinthia Jhovanna / Sumaya-Martínez, María Teresa

    Fishes. 2023 June 19, v. 8, no. 6

    2023  

    Abstract: Fish represent one of the most perishable food groups. Therefore, it is important to find viable alternatives that contribute to the preservation of quality and increase the shelf life of fishery products, and one alternative is to use natural extracts ... ...

    Abstract Fish represent one of the most perishable food groups. Therefore, it is important to find viable alternatives that contribute to the preservation of quality and increase the shelf life of fishery products, and one alternative is to use natural extracts with antimicrobial activity. The objective of this study was to determine the effect of a natural extract prepared with garlic (NGE) on the quality and shelf life of tilapia fillets stored on ice for 18 days. For this purpose, NGE was prepared by homogenizing peeled garlic cloves with distilled water, which were then centrifuged to obtain the extract (NGE); then, the fish fillets were immersed in the extract and were coated in NGE. The fillets with NGE were packed in high-density polyethylene bags and stored in crushed ice for 18 days. The adenosine 5′-triphosphate (ATP) and degradation products, K-value, color, texture, water holding capacity, pH, total mesophilic count, and total volatile bases (TVB-N) were monitored during storage. The ATP content, K-value, pH, total microbial count, and TVB-N changed with respect to ice storage time, and the results between fillets with NGE and control fillets differed. In conclusion, the application of NGE increased the shelf life of fillets stored on ice by 6 days, obtaining a shelf life of 18 days on ice, which shows its potential to improve the utilization of the species.
    Keywords Oreochromis niloticus ; adenosine ; antimicrobial properties ; cold storage ; color ; fisheries ; garlic ; ice ; pH ; perishable foods ; polyethylene ; shelf life ; storage time ; texture ; total volatile basic nitrogen
    Language English
    Dates of publication 2023-0619
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ISSN 2410-3888
    DOI 10.3390/fishes8060325
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Coliform bacteria in San Pedro Lake, western Mexico

    Ramos‐Ramírez, Lesset del Consuelo / Romero‐Bañuelos, Carlos Alberto / Jiménez‐Ruíz, Edgar Iván / Palomino‐Hermosillo, Yolotzin Apatzingan / Saldaña‐Ahuactzi, Zeus / Martínez‐Laguna, Ygnacio / Handal‐Silva, Anabella / Castañeda‐Roldán, Elsa Iracena

    Water environment research. 2021 Mar., v. 93, no. 3

    2021  

    Abstract: Urbanization, livestock activities, and rainfall are factors that contribute to the contamination of inland water. This study aimed to determine the spatial and temporal variability of total coliforms (TCs) and fecal coliforms (FCs) in the surface water ... ...

    Abstract Urbanization, livestock activities, and rainfall are factors that contribute to the contamination of inland water. This study aimed to determine the spatial and temporal variability of total coliforms (TCs) and fecal coliforms (FCs) in the surface water of San Pedro Lake as well as the gills and skin of Nile tilapia (Oreochromis niloticus) cultivated in the lake. The study consisted of seasonal sampling during an annual cycle. Using the multiple‐tube fermentation technique, we quantified the microbial load of TCs in the lake and fish. The median of the TC and FC groups in surface water showed differences during the seasonal cycle, in which a significant correlation was observed between rainfall and bacterial load in the lake surface water. There was a significant seasonal difference between FCs and TCs in the gills as well as in skin FCs. Anthropogenic activities in the watershed combined with rainfall influence the bacterial load of San Pedro Lake. However, the water quality is still classified as excellent and uncontaminated according to Mexican regulations with lower FC values acceptable for higher FC values. In addition, the bacterial load in tilapia from San Pedro Lake does not pose a risk to human health. PRACTITIONER POINTS: Watershed livestock activities combined with rainfall increase fecal matter pollution in specific areas of the lake. San Pedro Lake displays satisfactory quality for aquatic life. The median fecal coliform population in lake fish (gills and skin) differs by season.
    Keywords Oreochromis niloticus ; coliform bacteria ; environment ; fecal bacteria ; feces ; fermentation ; fish ; human health ; lakes ; livestock ; microbial load ; pollution ; rain ; research ; risk ; seasonal variation ; surface water ; urbanization ; water quality ; watersheds ; Mexico
    Language English
    Dates of publication 2021-03
    Size p. 384-392.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1098976-6
    ISSN 1554-7531 ; 1047-7624 ; 1061-4303
    ISSN (online) 1554-7531
    ISSN 1047-7624 ; 1061-4303
    DOI 10.1002/wer.1423
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 4344: Show issues

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  3. Article ; Online: Coliform bacteria in San Pedro Lake, western Mexico.

    Ramos-Ramírez, Lesset Del Consuelo / Romero-Bañuelos, Carlos Alberto / Jiménez-Ruíz, Edgar Iván / Palomino-Hermosillo, Yolotzin Apatzingan / Saldaña-Ahuactzi, Zeus / Martínez-Laguna, Ygnacio / Handal-Silva, Anabella / Castañeda-Roldán, Elsa Iracena

    Water environment research : a research publication of the Water Environment Federation

    2020  Volume 93, Issue 3, Page(s) 384–392

    Abstract: Urbanization, livestock activities, and rainfall are factors that contribute to the contamination of inland water. This study aimed to determine the spatial and temporal variability of total coliforms (TCs) and fecal coliforms (FCs) in the surface water ... ...

    Abstract Urbanization, livestock activities, and rainfall are factors that contribute to the contamination of inland water. This study aimed to determine the spatial and temporal variability of total coliforms (TCs) and fecal coliforms (FCs) in the surface water of San Pedro Lake as well as the gills and skin of Nile tilapia (Oreochromis niloticus) cultivated in the lake. The study consisted of seasonal sampling during an annual cycle. Using the multiple-tube fermentation technique, we quantified the microbial load of TCs in the lake and fish. The median of the TC and FC groups in surface water showed differences during the seasonal cycle, in which a significant correlation was observed between rainfall and bacterial load in the lake surface water. There was a significant seasonal difference between FCs and TCs in the gills as well as in skin FCs. Anthropogenic activities in the watershed combined with rainfall influence the bacterial load of San Pedro Lake. However, the water quality is still classified as excellent and uncontaminated according to Mexican regulations with lower FC values acceptable for higher FC values. In addition, the bacterial load in tilapia from San Pedro Lake does not pose a risk to human health. PRACTITIONER POINTS: Watershed livestock activities combined with rainfall increase fecal matter pollution in specific areas of the lake. San Pedro Lake displays satisfactory quality for aquatic life. The median fecal coliform population in lake fish (gills and skin) differs by season.
    MeSH term(s) Animals ; Bacteria ; Environmental Monitoring ; Gills ; Humans ; Lakes ; Mexico ; Water Microbiology
    Language English
    Publishing date 2020-09-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1098976-6
    ISSN 1554-7531 ; 1047-7624 ; 1061-4303
    ISSN (online) 1554-7531
    ISSN 1047-7624 ; 1061-4303
    DOI 10.1002/wer.1423
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 490: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  4. Article: Shelf life of fresh fillets from eviscerated farmed tilapia (Oreochromis niloticus) handled at different pre‐filleting times

    Jimenez‐Ruiz, Edgar Iván / Maeda‐Martínez, Alfonso Nivardo / Ocaño‐Higuera, Víctor Manuel / Sumaya‐Martinez, Maria Teresa / Sanchez‐Herrera, Leticia Monica / Fregoso‐Aguirre, Oscar Alexandro / Rincones‐López, Jesús Ernesto / Palomino‐Hermosillo, Yolotzin Apatzingan

    Journal of food processing and preservation. 2020 July, v. 44, no. 7

    2020  

    Abstract: The effect of pre‐filleting time (from 8 to 72 hr) of eviscerated chilled tilapia (Oreochromis niloticus) on the freshness quality and shelf life of tilapia fillets during 19‐day storage at 0°C was determined to know if pre‐filleting time affects shell ... ...

    Abstract The effect of pre‐filleting time (from 8 to 72 hr) of eviscerated chilled tilapia (Oreochromis niloticus) on the freshness quality and shelf life of tilapia fillets during 19‐day storage at 0°C was determined to know if pre‐filleting time affects shell life of tilapia fillets. Nonsensory methods were employed including physical (color and texture), chemical (pH), biochemical [Total Volatile Basic Nitrogen (TVB‐N) and K value], and microbiological parameters. Adenylate Energy Charge of live fish was calculated at harvest to determine the stress condition of fish. Results indicate greatest shelf life of 15 and 13 days at 8 and 24 hr pre‐filleting times, respectively. Longer pre‐filleting times of 48 and 72 hr resulted in a reduction in shelf life to 11 and 9 days. In conclusion, pre‐filleting time exerts an important effect over shell life of tilapia fillets. PRACTICAL APPLICATIONS: This work highlights the importance of processing fish in the shortest time possible after harvest, since ice storage for hours or days will reduce shelf life of final product (fillets). Our data allow predicting the impact on shelf life when pre‐filleting storage time cannot be avoided.
    Keywords Oreochromis niloticus ; cold storage ; color ; energy ; freshness ; pH ; shelf life ; storage time ; texture ; total volatile basic nitrogen
    Language English
    Dates of publication 2020-07
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note NAL-AP-2-clean ; JOURNAL ARTICLE
    ZDB-ID 243448-9
    ISSN 1745-4549 ; 0145-8892
    ISSN (online) 1745-4549
    ISSN 0145-8892
    DOI 10.1111/jfpp.14529
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3960: Show issues

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