ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02147.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02148.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02149.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02150.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02151.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

In a study over a number of months, involving over 500 milk producers in three locations, and representing bulk milk collection from cans as well as mobile and stationary refrigerated bulk milk tanks, the precision of various random sampling and testing frequencies in estimating the fat, protein and lactose content of milk was evaluated. In addition, the traditional procedure of estimating the composition of milk supplies from chemically preserved composites was compared to values obtained by analysis of fresh samples. While sampling and testing every milk collection gave the most precise estimate of milk composition for each producer, it was found that for producers using refrigerated bulk milk tanks with ex‐farm collection, four random samples per month gave a precision of ±4% (or ±0.14% fat approx) for monthly fat content and ±l.2% (or ±0.04% fat approx) for annual fat content. Due to lower variability the precision for both protein and lactose estimation was much higher. The sample compositing procedure, while capable of a relatively high level of precision, did not always achieve this in practice and tended to underestimate the constituents in milk, especially protein and la

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02152.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Although the record of the milk powder industry is a good one in respect of product safety, failures have occurred resulting in outbreaks of food poisoning. From studies within the industry and from published case histories it is concluded that there is a widespread awareness of the requirements of good manufacturing practice (GMP) but lapses in attention to detail can, and have, led to potential and actual reduction of product safety. The lessons to be learned from such studies are discussed, including the role of GMP, equipment and building integrity, air quality, product and environmental testing and the use of critical control points. The paper looks briefly at the increasing pressures for greater legislative control on the industry, and the approach of the New Zealand dairy industry to pathogen control is briefly discussed.

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02153.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02154.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02155.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:1364-727X    

DOI:10.1111/j.1471-0307.1989.tb02156.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY