Pilasombut, Komkhae

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Preferred name
Pilasombut, Komkhae
Alternative Name
Pilasombut, K.
Main Affiliation
Email
komkhae.pi@kmitl.ac.th

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    Item type:Publication,
    Effect of glycerol on improving quality of ready to eat Nham jerky, an innovation of Thai fermented meat product
    (2019-01-01)
    Pilasombut, K.
    ;
    Sorapukdee, S.
    ;
    Chetawan, T.
    ;
    Ngamyeesoon, N.
    Different concentrations of glycerol were investigated for improving qualities of ready to eat pork Nham jerky, an innovation of Thai fermented meat product. Three concentrations at 0 (control), 5 and 10% of glycerol were applied in pork Nham. Microbiologica and physicochemical qualities were recorded during fermentation period and after drying. The results showed that addition of 10% glycerol displayed higher pH particularly on the third day of fermentation (p<0.05), causing lower total acidity and purge loss in pork Nham during fermentation process. However, lactic acid bacteria population were not different in all treatments. Greater red color (a*) and lower lightness (L*) was observed in Nham with 5% and 10% glycerol adding (p<0.05). After 3 days of fermentation process, pork Nham was cooked and dehydrated until the internal temperature reached 72C and water activity (a <inf>w</inf> ) < 0.75. This product, ready to eat Nham jerky is a novel meat product as normally Nham consume as raw product. Percentage of drying yield, a <inf>w</inf> , shear force, color and sensory evaluation were compared among treatments. The results demonstrated that drying yield percentage of jerky Nham containing 5% and 10% glycerol was significantly higher than that of the control (p<0.05), while a <inf>w</inf> and shear force obtained the lower value than control (p<0.05). Sensory evaluation indicated that the highest score in overall acceptance was observed in Nham jerky containing 10% glycerol. In conclusion, adding glycerol in Nham jerky improved qualities and sensory acceptance.