Decontamination of poultry meat by intense heat treatment
Başlık çevirisi mevcut değil.
- Tez No: 400616
- Danışmanlar: DR. JANET CRRYO
- Tez Türü: Doktora
- Konular: Gıda Mühendisliği, Veteriner Hekimliği, Food Engineering, Veterinary Medicine
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1999
- Dil: İngilizce
- Üniversite: Unıversıty Of Brıstol
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Zooloji Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Özet yok.
Özet (Çeviri)
Three physical methods for inactivating microorganisms on the surface of raw chicken -microwave heating, hot water immersion and steam condensation were investigated. Microwave heating produced very uneven temperature distribution. Attempts to reduce this were partially successful. The best results were achieved when heating regular-shaped chicken pieces in a standard microwave cavity, shielding with aluminium. Short time treatments had little effect on microbial populations. Where reductions in microbial numbers were observed so were high surface temperatures. No evidence of any athermal lethal effects of microwaves on microorganisms was observed. Previous reports of athermal effects were probably due to errors in temperature measurement. Only with more uniformity of heating, would microwaves be suitable for decontaminating poultry. Immersing vacuum-packed pieces of chicken in water at 100, 90, 80, 70, 60, 50 ±1°C for 1, 2, 6, 9, 60 and 120 s, respectively caused no irreversible changes in visual appearance. Determination of appearance changes using reflectance colorimetry was not successful, because the main changes were in surface roughness, not colour. These time/temperature treatment combinations had no significant effect on inoculated Escherichia coli O 80 populations. It was concluded that a much faster method of transferring heat was required. Atmospheric steam gave promising but variable results. Treatment times of 6-10 s reduced total viable counts (TVr) and ?nnN of F. mil O R0 on the skin of carcasses anc pieces by 0.41-3.00 and 0.55-1.90 log10 cfu cm"2, respectively. Sampling of whoh carcasses using a rinse technique, however, indicated that the steam did not alway: penetrate the cavity. Thus, longer treatment times were required in order to achievi significant reductions on carcasses, 60 s (6x10 s) to reduce TVCs by a maximum of 2.1. logl0 cfu ml4. Decontaminating poultry carcasses with steam at atmospheric pressur _show_ed substantial potential for^commercial development.
Benzer Tezler
- Doğal zeolitler yardımı ile radyoaktif atıkların temizlenmesi
Başlık çevirisi yok
SEVİNÇ ULUSÖZ
Yüksek Lisans
Türkçe
1990
Fizik ve Fizik MühendisliğiAnadolu ÜniversitesiY.DOÇ.DR. ERTUĞRUL YÜRÜKOĞULLARI
- Akut demir zehirlenmesinde dekontaminasyon yöntemi olarak polietilen glikol elektrolit lavaj solüsyonu ve magnezyum sulfatın karşılaştırılması
Başlık çevirisi yok
YEŞİM TUNÇOK
Tıpta Uzmanlık
Türkçe
1992
Eczacılık ve FarmakolojiDokuz Eylül ÜniversitesiFarmakoloji Ana Bilim Dalı
DOÇ.DR. HÜLYA GÜVEN
- Tek değişkenli zaman serilerini mevsimlik etkien arındırmada uygun tekniğin belirlenmesi ve bir uygulama
Determination of best techniques on filtering the seasonal effect of univarite time series and on application
KEMAL POYRAZ
- Ce (IV) poliaminokarboksilli asit başlatıcı poliakrilamidlerin sentezi ve karakterizasyonu
The Synthesis and characterization of polyacrylamides initiated by Ce (IV) polyaminocarboxylic acids
FATMA DURAP
- Reçine, aktif karbon ve Uv lambalarının ev tipi su arıtma cihazlarındaki etkinliğinin araştırılması
Başlık çevirisi yok
İREM TÖRE
