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MAXIMUM‐LIKELIHOOD ESTIMATION OF 120 FOR INOCULATED PACKS
Author(s) -
ROSS EDWARD W.
Publication year - 1977
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1977.tb14475.x
Subject(s) - maximum likelihood , statistics , confidence interval , mathematics , estimation , sterilization (economics) , exponential function , computer science , engineering , mathematical analysis , systems engineering , monetary economics , economics , foreign exchange market , foreign exchange
ABSTRACT This paper describes a statistical procedure for estimating the 12D dose in the radiation‐sterilization of canned food, using data from an inoculated pack experiment. The method assumes a two‐parameter distribution, of which the shifted‐exponential is taken as a prototype, and uses the maximum‐likelihood principle to estimate the parameters and hence 12D. The procedure is embodied in a computer program which estimates 12D and provides confidence limits on both 12D and the kill at zero dose. The method is described and illustrated by three examples and appears to obtain more information from the data than other methods do.