Hasan YETİM, Mete YANAR

The effects of electricla stimulation on the sensory and textural quality properties of mutton carcasses

Bu çalışmada, yaşlı koyunlardan elde edilen karkasların duyusal ve tekstürel kalite özellikleri üzerine elektriksel Stimulasyonun (ES) etkileri incelenmiştir. Bu amaçla, 3-5 yaşlı 14 adet koyun karkas yarımı, 350 volt ES'ye tâbi tutulmuş ve ES'nin duyusal ve instron tekstürel parametreleri üzerine etkileri değerlendirilmiştir. ES çok önemli derecede (P < 0,01 ) Longissimus dorsi (LD) kasına ait panel gevreklik puanını iyileştirmiştir. LD kasına ait pik kuvveti, başlangıç kuvveti gibi Instron Warner Bratzler Shear parametreleri, ES'den çok önemli derecede (P < 0,01) etkilenirken, Semimembranosus (SM) kası ise etkilenmemiştir, instron Compression Test sonucu, LD'den elde edilen sertlik ve pik kuvveti 2 değerleri de ES'den önemli (P < 0,05) dercede etkilenmiştir. Öte yandan, SM kasına ait instron Compression Test parametreleri de ES'den etkilenmemiştir. Bu sonuçlar, ES'nin koyun karkaslarından elde edilen LD kasının gevrekliğini önemli ölçüde artırdığını göstermiştir. Sonuç olarak, yaşlı koyunlardan elde edilen karkaslara uygulanan elektriksel Stimulasyonun bu tür karkasların ticari değeri ve kalitesini yükselterek et endüstrisi için faydalı olabileceği kanaatine varılmıştır.

Elektriksel stimulasyonunun koyun karkaslarının duyusal ve tekstürel kalite özellikleri üzerine etkileri

The objective of this research was to investigate the influence of electrical stimulation (ES) on the sensory and textural quality characteristics of mutton carcasses from elderly ewes. For this purpose, 14 ovine carcasses from 3-5-year-old ewes were subjected to ES with 350 V, and the effects of ES on the organoleptic and instron textural parameters were evaluated. The ES significantly (P < 0.01) improved the panel tenderness scores of the Longissimus dorsi (LD) muscle. Some of the Instron Warner Bratzler Shear parameters such as peak force and initial yield force values of the LD muscle were also highly significantly (P < 0.01 ) affected by ES, while the Semimembranosus (SM) muscle was not affected. Hardness and peak force 2 values of LD obtained from the Instron compression test were also significantly (P < 0.05) affected by ES. However, Instron compression parameters of SM muscles were not significantly influenced by ES treatment. The results revealed that the ES could considerably improve the tenderness of the LD from mutton carcasses. In conclusion, the application of ES to mutton carcasses from elderly ewes could be beneficial for the meat industry by increasing the merchandising value and quality of this sort of carcass.

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