“…The detection and enumeration of injured microorganisms in foods has in the lost few years received much attention in the literature. This subject has been reviewed by Ray and Speck (1973a); Kueck (1974); Lanz (1975);van Schothorst (1976); Busta (1976);and Hurst (1977). Injury of fbodborne microorganisms with on emphasis on the Enterobacteriaceoe has been associated with cells exposed to heating (Clark and Ordal, 1969;Tomlins and Ordal, 1971;Wilson and Davies, 1976;Tomlins and Ordal, 1976;and D'Aoust, 1978), freezing (Ingram and Mac key, 1976;and Speck and Ray, 1977), freeze drying (Sinskey and Silverman, 1970;Ray et al 1971a), drying (van Schothorst and van Leusden, 1972, irradiation (Licciardello et al 1970;and Maxcy, 1977), sanitizers (Scheusner, et al 1971a) and acidification (Roth and Keenan, 1971).…”