Comparison of milks processed by the direct and indirect methods of ultra-high-temperature sterilization: VI. Effects on sediment formation and clotting with enzymes

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Abstract
Summary When heat treatments of the same sporicidal effectiveness were given, directly heated ultra-high-temperature sterilized milk gave twice as much sediment as indirectly heated milk after storage at room temperature for 100 days. Both types of process reduced the rate of clotting of the milk with pepsin and rennin, but the effect of the indirect process was markedly greater than that of the direct process.