قارن الطرق

	نظام تحليل المخاطر ونقاط التحكم الحرجة	قيمة D وقيمة Z
المجال	علوم الأغذية	علوم الأغذية
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	1988	1923
صاحب الطريقة	Frank Bryan	Charles Olin Ball
النوع	Risk Management Framework	Microbial Inactivation Kinetics
المصدر التأسيسي	Bryan, F. L. (1992). Hazard Analysis Critical Control Point Evaluations: A Guide to Identifying Hazards and Assessing Risks Associated with Food Preparation and Storage. Journal of Food Protection, 55(1), 51-59.	Stumbo, C. R. (1973). Thermobacteriology in food processing (2nd ed.). Academic Press.
الأسماء البديلة	—	decimal reduction time, thermal resistance
ذات صلة	3	3
الملخص	HACCP (Hazard Analysis and Critical Control Points) is a systematic preventive approach to food safety developed in the late 1980s by Bryan and colleagues. It identifies potential biological, chemical, and physical hazards in food production processes and establishes critical control points to prevent contamination. HACCP is now globally recognized as the gold standard for food safety management.	D-value (decimal reduction time) and Z-value characterize the thermal resistance of microorganisms in food. D-value is the time required at a specific temperature to reduce microbial population by 90% (one log unit). Z-value is the temperature change needed to reduce the D-value tenfold. Together, they enable food processors to design thermal processes ensuring microbial safety while minimizing nutrient loss.