Synergistic antibacterial effect of nisin, ethylenediaminetetraacetic acid, and sulfite on native microflora of fresh white shrimp during ice storage

2020 ◽  
Vol 40 (4) ◽  
Author(s):  
Zheng‐Rong Liang ◽  
Hsin‐I Hsiao ◽  
Dong‐Jing Jhang
2013 ◽  
Vol 24 (4) ◽  
pp. 340-353 ◽  
Author(s):  
Miriam-Hiesu García-Morales ◽  
Martín Pérez-Velázquez ◽  
Mayra L. González-Felix ◽  
Armando Burgos-Hernández ◽  
Mario-Onofre Cortez-Rocha ◽  
...  

1977 ◽  
Vol 40 (4) ◽  
pp. 252-255 ◽  
Author(s):  
WUNWIBOON WILAICHON ◽  
BRYANT F. COBB ◽  
DWAYNE A. SUTER ◽  
THAYNE R. DUTSON

Five different sample lots of white shrimp (Penaeus setiferus) were divided into two groups. One group was kept at room temperature (23–24 C) and the other on ice until putrid odors began to appear. Protein and non-protein nitrogen (NPN), water, and collagen contents were measured initially and when putrid odors began to appear. Initial protein content ranged from 14.04–16.93% and water content ranged from 68.24–77.31% Initial water and protein [(Total Nitrogen - NPN) × 6.25] had the relationship % water = 122.25 – 3.19(% protein), r = 0.998). At 23–24 C the NPN to TN ratio increased significantly (p < 0.01) in two lots and slightly in one lot. In ice stored shrimp NPN and protein nitrogen decreased by an average amount of 50% and 25%, respectively. During ice storage, water content increased significantly in all three lots of shrimp. Initial total collagen content ranged from 6.71–8.83 mg/g with the %soluble ranging from 11.92–45.22%. Soluble collagen increased significantly in two lots and decreased significantly in one lot at both room and ice-storage temperature.


2021 ◽  
Vol 42 (3) ◽  
pp. 652-658
Author(s):  
S.M.A. Javith ◽  
◽  
X.A.M. Xavier ◽  
B.B. Nayak ◽  
H.S. Kumar ◽  
...  

Aim: The present study aimed to investigate the shelf life of Pacific white shrimp (Litopenaeus vannamei) reared in inland saline water (ISRV) with those reared in natural brackish water (BWRV) during ice storage. Methodology: Freshly harvested L. vannamei shrimp cultured in inland saline water and brackish water were collected and biochemical parameters, microbial analysis and sensory parameters were evaluated for 21 days during ice storage with sampling interval of 3 days. Results: Total volatile basic nitrogen content increased up to 9th day in shrimps reared in BWRV and up to 3rd day in ISRV reared shrimps. Similarly, tri methyl amine content increased up to 3rd day for ISRV, there after the values decreased. The values of lipid oxidation such as peroxide value, free fatty acid and thiobarbituric acid reactive substance increased. Sensory scores for ice stored BWRV and ISRV showed a decreasing trend with increasing storage period. Interpretation: On the basis of microbiological parameters, pacific white shrimp (Litopenaeus vannamei) reared in brackish water and inland saline water can be ice-stored up to 12 days in fresh conditions, while other biochemical and sensory parameters are acceptable up to 18 days.


2007 ◽  
Vol 6 (2) ◽  
pp. 205
Author(s):  
. Sukenda ◽  
Y. Tri Anggoro ◽  
D. Wahjuningrum ◽  
. Rahman

<p>Immunostimulation and antibacterial effect of chitosan against vibriosis were examined in white shrimp (<em>Litopenaeus vannamei</em>).  Control shrimps were injected with 0.05 μl of sterile sea water, while experimental shrimps were injected with 2, 4 and 6 μg per g shrimp of chitosan.  All shrimps were subsequently challenged by 10<sup>6</sup> CFU/ml of live <em>Vibrio harveyi</em> by injection method.  Survival rate of shrimps injected with chitosan were found to slightly increase in accordance with dose of chitosan, even not statistically significant.  Total haemocyte count and phagocytic index at experimental shrimps were over than control shrimps up to three days post injection.  Number of <em>V. harveyi</em> in the intestine of experimental shrimps were lower than control shrimps indicates an antibacterial activity of chitosan to combat infection.</p> <p>Keywords: chitosan,<em> </em><em>Vibrio harveyi</em>, haemocyte, phagocytic index, <em>Litopenaeus vannamei</em></p> <p> </p> <p>ABSTRAK</p> <p>Efek imunostimulasi dan antibakterial dari kitosan melawan vibriosis dilihat pada udang putih (<em>Litopenaeus vannamei</em>).   Udang control disuntik dengan 0,05 μl air laut steril, sedangkan udang uji disuntik dengan kitosan 2, 4 dan 6 μg per g udang.  Semua udang diuji tantang dengan 10<sup>6</sup> CFU/ml bakteri <em>Vibrio harveyi</em> hidup dengan metode penyuntikan.  Sintasan udang yang disuntik dengan kitosan meningkat berbarengan dengan peningkatan dosis kitosan, meskipun tidak menunjukkan perbedaan yang nyata.  Jumlah total hemosit dan indeks fagositosis pada udang lebih tinggi dibandingkan kontrol sampai tiga hari pasca penyuntikan.  Jumlah <em>V. harveyi</em> dalam saluran pencernaan dari udang uji lebih rendah dibandingkan udang kontrol, hal ini  menunjukkan aktifitas antibacterial dari kitosan dalam melawan infeksi.</p> <p>Kata kunci: kitosan,<em> Vibrio harveyi</em>, hemosit, indeks fagositosis, <em>Litopenaeus vannamei</em></p>


2007 ◽  
Vol 4 (2) ◽  
pp. 183
Author(s):  
. Sukenda ◽  
A.J. Sihombing ◽  
Fitria Novianti ◽  
. Widanarni

<p>Probiotic was screened from 28 strains of normal bacterial flora isolated from rearing water in a <em>Litopenaeus vannamei</em> farm based on its inhibitory activity against the growth of <em>Vibrio harveyi</em>.  Antibacterial activity was also tested in vivo to <em>V. harveyi</em> in <em>L. vannamei</em>.  The result showed that  the probiotic has a antibacterial effect on <em>V. harveyi</em>.  The in vivo test showed that shrimps injected with probiotic previously before challenged with <em>V. harveyi</em> has survival higher than control.  Probiotic isolate was suspected as <em>Vibrio furnissi</em>.</p> <p>Keywords:  biocontrol, inhibitory activity, <em>Vibrio furnissi</em>, <em>Vibrio harveyi</em>, <em>Litopenaeus vannamei</em></p> <p> </p> <p>AbstraK</p> <p>Bakteri probiotik ditapis dari 28 strain bacteria flora yang diisolasi dari air pemeliharaan udang vaname <em>Litopenaeus vannamei</em> berdasarkan aktivitas penghambatannya terhadap pertumbuhan <em>Vibrio harveyi</em>.  Aktivitas bakteri probiotik juga diuji secara <em>in vivo</em> terhadap <em>V. harveyi</em> pada udang putih.  Hasil penelitian menunjukkan bahwa bakteri probiotik isolat memiliki kemampuan antibakteria terhadap <em>V. harveyi</em>.  Uji <em>in vivo</em> menunjukkan bahwa udang yang diinjeksi probiotik sebelum diuji tantang dengan <em>V. harveyi</em> memiliki kelangsungan hidup lebih tinggi daripada kontrol.  Isolat probiotik tersebut diduga adalah <em>Vibrio furnissi</em>.</p> <p>Kata kunci:  biokontrol, aktivitas penghambatan, <em>Vibrio furnissi, Vibrio harveyi, Litopenaeus</em> <em>vannamei</em></p>


2017 ◽  
Vol 45 (2) ◽  
pp. 421-430 ◽  
Author(s):  
Martin R. Acedo Valdez ◽  
Jose M. Grijalva Chon ◽  
Eduardo Larios Rodriguez ◽  
Amir D. Maldonado Arce ◽  
Fernando Mendoza Cano ◽  
...  

2020 ◽  
Vol 1 (12) ◽  
pp. 40-42
Author(s):  
F. Yu. Daurova ◽  
D. I. Tomaeva ◽  
S. V. Podkopaeva ◽  
Yu. A. Taptun

Relevance: the reason for the development of complications in endodontic treatment is poor-quality instrumental treatment root canals.Aims: a study of the animicrobial action and clinical efficacy of high-frequency monopolar diathermocoagulation in the treatment of chronic forms of pulpitis.Materials and methods: 102 patients with various chronic forms of pulpitis were divided into three groups of 34 patients each. In the first two groups, high-frequency monopolar diathermocoagulation was used in endodontic treatment in different modes. In the third group, endodontic treatment was carried out without the use of diathermocoagulation (comparison group). The root canal microflora in chronic pulpitis in vivo was studied twice-before and after diathermocoagulation.Results: it was established that high-frequency monopolar diathermocoagulation in the effect mode is 3, power is 4 (4.1 W) and effect is 4, power is 4 (5.4 W) with an exposure time of 3 seconds, it has a pronounced antibacterial effect on all presented pathogenic microflora obtained from the root canals of the teeth.


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