ISSN:0022-5142    

DOI:10.1002/jsfa.2740050201

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractA study has been made of the onset ofrigor mortisin thelongissimus dorsimuscle of the ox, thus extending similar observations previously made on rabbit muscle. The changes in pH and adenosine triphosphate (ATP) content accompanying the physical manifestations ofrigorare described. As in rabbit muscle, the development of inextensibility accompanies the dephosphorylation of ATP, and, provided the ultimate pH is low, the fall in pH runs parallel to these changes. The rate of decrease in pH is almost identical with that in rabbit muscle at physiological temperature, but differs appreciably from it at lower temperatures. The results are discussed in relation to the time required for the completion of the onset ofrigor mortisin commercial chillers.

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050202

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractA detailed quantitative study of the ultra‐violet and the infra‐red spectra of pomegranate‐seed oil has been made. The ultra‐violet data confirm the presence of a conjugated triene system for which the infra‐red measurements suggest acis‐cis‐trans‐orientation as the most likel

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050203

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractTests carried out by two independent taste‐panels showed that autumn treatment of potatoes with 2:3:5:6‐tetrachloro‐I‐nitrobenzene (TCNB) to reduce sprouting during storage resulted in a slight but significant lowering of flavour quality. This was less marked after eight months storage than after five. A consumer‐acceptance test in which potatoes stored for eight months were eaten as part of a meal failed to reveal any off‐flavour. Taste‐panel tests with potatoes treated withisopropylN‐phenylcarbamate (IPC, propham) gave no indication of the presence of any off‐flavour attribut

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050204

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractIn microbial fractions separated from the rumen contents of a hay‐fed sheep pigmentation was found to be caused by pigments normally associated with plant chloroplasts. The extent of this pigmentation was greater than might be expected from the concentration in the hay feed. No chlorophyll typical of the known pigmented bacteria was found. An assessment of plant‐particle contamination of microbial fractions, based on the pigment concentrations found, agreed in general with an assessment by a new direct‐observation technique. The lowest contamination found was calculated to be of the order of 10%.Degradation of chlorophylls in the rumen was demonstrated and was found to be more extensive when artificially dried grass was fed than when hay was fed.The implications of these findings are disc

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050205

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractIn this paper are recorded the constants of the seed oils of the speciesDatura metel, D. stramoniumandCapparis rothiiand their fatty acid compositions, which resemble those of other species of the two families that have been previously reported.

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050206

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractThe waste waters from fruit and vegetable canneries are among the strongest of organic trade effluents and, moreover, occur in large volumes. By reason of the high proportion of carbohydrate they contain, their purification by conventional methods was not expected to be easy. The present paper summarizes the experience gained over a period of several years in the design and operation of a biological filtration plant for the purification of the wastes from a medium‐sized fruit and vegetable cannery, operating throughout the year and manufacturing the whole range of products normally made in such factories in Great Britai

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050207

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractA method for routine plant control is outlined whereby incipient yeast‐cell spoilage in pressure‐stored refrigerated fruit juice may be detected. The morphological appearance of the cells is interpreted as an average figure relative to a standard n

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050208

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractThe continuous removal of extractants during the lignin pretreatment procedure has been accomplished. In this study all the pretreatment extractions were carried out in a Soxhlet extractor. No transferring or filtering was necessary. Pretreatment involving a 6‐hour continuous acid extraction gives a final lignin value similar to that obtained by refluxing with acid for 3 hours in the conventional manner. Continuous extraction with acid for 9 hours removes almost all the acid‐soluble material from plant tissue. The lignin isolated by the modified procedure is lower in both nitrogen and methoxyl than that isolated by the standard A.O.A.C. pretreatment procedure. The modified method is readily applicable to routine analytical determinations of lig

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050209

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY

摘要:

AbstractThe stability of vitamin A in mixed rations has been studied under a variety of storage conditions. With vitamin A, added in the form of cod‐liver oil (C.L.O.), stability is greater in a mash of medium particulate size than in one of coarse particulate size; this effect has been constant when light, temperature and the nature of the container, with corresponding variations in the degree of exposure to atmospheric oxidation, have been varied. The destructive action of mineral salts on this form of vitamin A has been confirmed, and found to be reversed by the addition of gelatin. The stability of vitamin A in cod‐liver oil is greater in the presence of fish meal or liver meal, but less in the presence of dried brewer's yeast, than in the presence of various cereal products. ‘Cubing of the diet’ asserts a protective action on vitamin‐A palmitate. In the particular conditions of our experiments, the stability of vitamin‐A palmitate is greater than that of vitamin A in the form of C.L.O. when added to a

ISSN:0022-5142    

DOI:10.1002/jsfa.2740050210

出版商:John Wiley&Sons, Ltd    

年代:1954

数据来源: WILEY