摘要:

AbstractTwo experiments are reported in which dried skim milk was used at levels of 0, 40, 80, 120 and 160 g kg−1of diet to replace mainly fishmeal in broiler diets. In experiments 1 and 2, the stocking densities were 0.2 and 0.08 m2per bird, respectively. Food intake was increased by dried skim milk, particularly at the higher levels of inclusion. Live‐weight gain was not affected by the inclusion of skim milk, but the efficiency of food conversion was adversely affected after week 1 in experiment 1 and by week 4 in experiment 2. Litter moisture content was virtually unaffected by treatment in experiment 1 but was significantly increased by dietary treatment in experiment 2. It is suggested that the wet litter had contributed to the incidence of breast‐burn in the bro

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320112

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY

摘要:

AbstractDifferences were observed in the texture and susceptibility to enzymic breakdown of sulphited fruit of eight strawberry varieties. Cambridge Favourite was the softest variety in sulphite and was also the most susceptible to breakdown by pectolytic enzymes ofRhizopusandMucorspp. Endopolygalacturonases (endo‐PG) from these species were more rapidly inactivated in sulphite liquor in the presence of fruit of the variety Harvester, which consequently showed the greatest resistance to breakdown. Isoelectric focusing indicated that a single major isoenzyme from each strain ofR. sexualis, R. stoloniferandM. piriformispersisted in sulphite liquor and was, therefore, responsible for breakdown, although the major form ofM. piriformiswas less acid‐stable than those of theRhizopusspp. Other minor isoenzymes produced by the fungi were inactivated within 24 h of sulphiting. Each species produced its major acid‐stable endo‐PG in the three varieties tested; thus varietal differences in susceptibility to breakdown may be related to the occurrence of natural enzyme inhibitors and/or fruit st

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320113

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY

摘要:

AbstractCurrent views on freeze damage require that a reversal of osmotic flow occurs, on differential freezing across a membrane. This hypothesis has been tested using a variation of the traditional thistle‐funnel apparatus. Cellulose acetate membranes were used to retain sucrose solution within the thistle‐funnel and the arrangement was immersed in water. The sucrose concentration was measured refractrometrically whilst the water was slowly frozen. Once the water had fully frozen the sucrose concentration was observed to increase, reversing the steady dilution that had been observed before freezing of the water was complete. This concentration effect is consistent with a reversal of osmotic flow on differential freezing across the membrane. The effect was also observed in polyethylene glycol, retained with Amicon diaflo UMOS membra

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320114

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY

摘要:

AbstractThe following are summaries of papers presented at a joint meeting of the Agriculture Group and the Food Group, held on 29 April 1980 at the Society of Chemical Industry, 14 Belgrave Square, London SW1X 8PS. Papers so published are entirely the responsibility of the authors and in no way reflect the views of the Editorial Board of theJournal of the Science of Food and Agriculture.

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320115

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320116

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY

ISSN:0022-5142    

DOI:10.1002/jsfa.2740320101

出版商:John Wiley&Sons, Ltd    

年代:1981

数据来源: WILEY