scholarly journals Microbial Growth and Biogenic Amine Production in a Balkan-Style Fresh Sausage during Refrigerated Storage under a CO2-Containing Anaerobic Atmosphere: Effect of the Addition of Zataria multiflora Essential Oil and Hops Extract

Antibiotics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 227 ◽  
Author(s):  
Diego E. Carballo ◽  
Javier Mateo ◽  
Sonia Andrés ◽  
Francisco Javier Giráldez ◽  
Emiliano J. Quinto ◽  
...  
Keyword(s):  
Essential Oil ◽  
Biogenic Amine ◽  
Microbial Growth ◽  
Ph Value ◽  
Storage Period ◽  
Zataria Multiflora ◽  
Atmosphere Effect ◽  
N2 Atmosphere ◽  
Colony Forming Units ◽  
Brochothrix Thermosphacta

Fresh sausages are highly perishable, and the preservatives allowed in these types of meat preparations are limited. Balkan-style fresh sausages were prepared in triplicate without antimicrobials (Control), with an aqueous hops extract (30 mL/kg), with Zataria multiflora Boiss essential oil (1 mL/kg), or a combination of both (15 and 0.5 mL/kg, respectively), and refrigerator-stored under a 20% CO2 and 80% N2 atmosphere. The spoilage microbial growth, i.e., lactic acid bacteria (LAB), Brochothrix thermosphacta, Enterobacteriaceae, Micrococcaceae, molds and yeasts, the pH value, and the production of biogenic amines in the sausages were monitored weekly and compared with a control sausage during a 35-day storage period. Furthermore, 349 colonies of presumptive LAB (isolated from the De Mann, Rogose-Sharpe agar plates) were identified using a MALDI-TOF-based method. Growth levels to ≈ 9 Log colony forming units (CFU) per g were reached by LAB, with a predominance of Lactobacillus sakei. Enterobacteriaceae and B. thermosphacta also showed significant growth (up to 6 Log CFU/g). Biogenic amine levels increased, and tyramine values overcame 250 mg/kg. The study could not demonstrate a significant effect of antimicrobial source treatments in any of the characteristics studied, and thus, the shelf-life of sausages.

Combined Chitosan-Thyme Treatments with Modified Atmosphere Packaging on a Ready-to-Cook Poultry Product

2010 ◽  
Vol 73 (4) ◽  
pp. 663-669 ◽  
Author(s):  
V. GIATRAKOU ◽  
A. NTZIMANI ◽  
I. N. SAVVAIDIS
Keyword(s):  
Essential Oil ◽  
Shelf Life ◽  
Modified Atmosphere Packaging ◽  
Storage Period ◽  
Modified Atmosphere ◽  
Sensory Data ◽  
Thyme Essential Oil ◽  
Brochothrix Thermosphacta ◽  
Yeasts And Molds ◽  
Entire Storage Period

In the present study, natural antimicrobials chitosan and thyme, and their combination, were evaluated for their effect on the shelf life of a ready-to-cook (RTC) chicken-pepper kebab (skewer) stored under modified atmosphere packaging (MAP) conditions at 4 ± 0.5°C for 14 days. The following treatments were examined: control samples stored under aerobic packaging (A), samples stored under MAP (M), samples treated with 1.5% chitosan (vol/wt) and stored under MAP (M-CH), samples treated with 0.2% thyme essential oil (vol/wt) (M-T), and samples treated with 1.5% chitosan (vol/wt) and 0.2% thyme essential oil (vol/wt) and stored under MAP (M-CH-T). Treatment M-CH-T significantly affected aerobic plate counts and counts of lactic acid bacteria, Pseudomonas spp., Brochothrix thermosphacta, Enterobacteriaceae, and yeasts and molds during the entire storage period. Similarly, lipid oxidation of the RTC product was retarded (M-CH-T treatment) during storage, whereas redness was maintained in M-T, M-CH, and M-CH-T samples. Based primarily on sensory data (taste attribute), M-CH and M-T treatments extended RTC product shelf life by 6 days, whereas M-CH-T treatment resulted in a product with a shelf life of 14 days that maintained acceptable sensory characteristics (shelf life of the control was 6 days).

scholarly journals Effect of adding lemon peels oils to gelatin edible films on some quality characteristics of storage chilled chicken breast meat: تأثير إضافة زيت قشور الليمون لأغلفة الجيلاتين القابلة للأكل في بعض صفات الجودة للحم صدر الدجاج المخزّن بالتبريد

2021 ◽  
Vol 5 (4) ◽  
pp. 90-76
Author(s):  
Nesreen Abdulqader Qurabi, Abdulhakim Fahed Azizieh, Abdulwa Nesreen Abdulqader Qurabi, Abdulhakim Fahed Azizieh, Abdulwa
Keyword(s):  
Essential Oil ◽  
Sodium Alginate ◽  
Ph Value ◽  
Storage Period ◽  
Edible Films ◽  
Quality Characteristics ◽  
Chicken Breast ◽  
Breast Meat ◽  
Chicken Breast Meat

The aim of this investigation is to specific shelf life of storage chilled chicken breast meat by filling it with gelatin-sodium alginate edible films which contain lemon peels essential oil (LPO) at various final concentrations. Lemon peels essential oil was prepared by steam distilling, and gelatin-sodium alginate edible films were prepared, and LPO was added by the following percentages (0, 0.5, 1, 1.5, 2 %). These groups were packaged in gelatin-sodium alginate edible films, then preserved at (4±1° C) for 18 days and examined after 0, 3, 7, 11, 14 and 18 days of refrigeration for total count of bacteria, freshness and chemical properties. Freshness analyses included determination of pH value and thiobarbituric acid TBA. Chemical analyses included determination of moisture, ash, fat, and protein content. The samples treated by gelatin-sodium alginate edible films with 2 % LPO had the best quality characteristics during the chilled storage period, thereby samples of chicken breast meat had saved of quality characteristics for 14 days.

scholarly journals Nutritive value and safety aspects of acidified mantis shrimp during ambient storage

2019 ◽  
Vol 36 (2) ◽  
pp. 155-161
Author(s):  
Gülsün Özyurt ◽  
Caner Enver Özyurt ◽  
Elif Tuğçe Aksun Tümerkan ◽  
Ali Serhat Özkütük
Keyword(s):  
Biogenic Amines ◽  
Biogenic Amine ◽  
Nutritive Value ◽  
Ph Value ◽  
Bacterial Load ◽  
Storage Period ◽  
Raw Material ◽  
Acid Mixture ◽  
Protein Nitrogen ◽  
Mantis Shrimp

In this study effects of acidification with an organic acid (3 %, formic acid - FA) and an organic-inorganic acid mixture (1.5 % FA + 1.5 % sulphuric acid - FASA) were evaluated on a non-target species (mantis shrimp - Erugosquilla massavensis). Nutritional composition (proximate analysis and fatty acid composition), chemical (biogenic amine concentrations, non-protein nitrogen -NPN and pH) and microbiological assessments (total viable counts -TVC and lactic acid bacteria counts -LAB) were conducted under 27-28 °C. The analysis conducted for a 60 day period at 1st, 7th, 14th, 30th, 42nd and 60th day intervals. Moisture contents of acidified shrimp were significantly lower than the raw material. No changes in protein contents and an increase in lipid content only in FASA group were observed. Palmitic acid, stearic acid, palmitoleic acid, oleic acid and docosahexaenoic acid (DHA) were observed to be the dominant fatty acids in raw and acidified mantis shrimp. The initial pH value of mantis shrimp was 7.71 and became stable (4.14-3.97) throughout the storage period. An increase was observed in NPN contents and FA and FASA were 0.56 and 0.51 g 100 g-1, respectively at the end of the storage. Putrescine (3.00 mg 100 g-1), tyramine (2.94 mg 100 g-1) and serotonin (2.71 mg 100 g-1) were found to be the dominant biogenic amines in raw mantis shrimp. No significant changes in biogenic amine concentrations were observed in general during the storage period. TVC was found as 4.16 log cfu g-1 at the beginning of the storage period. Bacterial load was decreased after the addition of acids and stayed low throughout the storage period. Increases were observed in LAB and this value were 4.50 and 5.68 log cfu g-1 for FA and FASA group, respectively at the end of the storage period. The results showed acid treated mantis shrimp could be considered potential feed component due to its high nutritional value and safe in regards of biogenic amines.

Potential anti-diabetic and anti-oxidant activity of essential oil of Zataria multiflora leaves

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
YY Kamrani ◽  
M Amanlou ◽  
A Yazdanyar ◽  
A AdliMoghaddam ◽  
SN Ebrahimi
Keyword(s):  
Essential Oil ◽  
Zataria Multiflora ◽  
Anti Oxidant

scholarly journals The Investigation of Decontamination Effects of Ozone Gas on Microbial Load and Essential Oil of Several Medicinal Plants

2013 ◽  
Vol 5 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Razieh VALI ASILL ◽  
Majid AZIZI ◽  
Maasome BAHREINI ◽  
Hossein AROUIEE
Keyword(s):  
Medicinal Plants ◽  
Essential Oil ◽  
Block Design ◽  
Microbial Load ◽  
Mentha Piperita ◽  
Gas Treatment ◽  
Zataria Multiflora ◽  
Gas Concentration ◽  
Mold And Yeast ◽  
And Control

Today, Ozone as a disinfectant method, without putting on the harmful effects on human and plant products, it is alternative common methods for disinfection of plant material. The research as a factorial experiment was conducted on the basis of randomized complete block design with three replications and the effects of Ozone gas on decreasing the microbial load of some important medicinal plants include: Peppermint (Mentha piperita), Summer savory (Satureja hortensis), Indian valerian(Valeriana wallichii), Meliss (Melissa officinalis) and Iranian thyme (Zataria multiflora) were investigated. Medicinal plants leaves were treated with Ozone gas concentration 0.3, 0.6 and 0.9 ml/L at times of 10 and 30 then total count, coliform and mold and yeast of the samples were studied. The result showed that Ozone gas decreases microbial load of medicinal plants samples. But Ozone gas and Ozone gas in medicinal plants interaction effect had no effect on essential oil content. The lowest and the highest of microbial load were detected in samples treated with concentration of 0.9 ml/L of Ozone gas and control respectively. The highest and the lowest of microbial load were observed in Iranian thyme and Indian valerian respectively. Also result showed that Ozone gas treatment for 30 min had the greatest of effect in reducing the microbial load and 0.9 ml/L Ozone gas concentration had the lowest of microbial load. Results of this survey reflect that the use of Ozone as a method of disinfection for medicinal plants is a decontamination.

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