摘要:

AbstractThe article describes some of the main types of compounds possessing systemic antifungal properties, and their possible modes of action are discussed. the requirements for a compound to be a successful systemic fungicide are listed, together with the probable lines of future development in this field of crop protection.

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121201

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe addition of amino‐acids to wheat flour doughs results in increased browning of the crust of the baked bread. Doughs to which glycine and lysine have been added show a decrease in gas production. An explanation for this decrease is offered by the assumption that the formation ofN‐substituted glycosylamines from the added amino‐acids and the reducing sugars in the dough is respon

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121202

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractA rapid chemical test for the degree of treatment of biscuit flours with ‘Melloene’ was sought. the reduction of the optical density of a solution of Astrazone Pink FG (Bayer) under‐specified conditions has been effe

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121203

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractHerring were cooked at 100° under a stream of nitrogen and the resulting vapour passed through a solution of 2,4‐dinitrophenylhydrazine. the main components of the resulting mixture of 2,4‐dinitrophenylhydrazones were shown to be the derivatives of acetaldehyde, propionaldehyde, isobutyraldehyde, 2‐methylbutyraldehyde and a

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121204

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractHydrolysates of the soluble polysaccharide fraction from a well decomposed peat contained small amounts of 4‐O‐methyl‐D‐galactose and 2‐O‐methyl‐L‐rhamnose. the first‐named sugar has not hitherto been isolated from natural sources. Its isolation supports a connexion between the occurrence of methylated sugars in Nature and the position of the linkage in related polysaccharides. the sugars were isolated from the complex mixture by gradient elution from Ultrasorb charcoal followed by partition chromatography on Celite columns with a butanol‐light petroleum solvent.The significance of the occurrence of these sugars is discussed. It is suggested that the stability of the polysaccharides in soil may be associated with the presence of the met

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121205

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe first results are reported of collaborative work carried out, under the aegis of the Agricultural Research Council, at 13 different laboratories to assess different laboratory procedures for the evaluation of quality in protein concentrate feedingstuffs.In all, 130 samples of seven different types of protein concentrate were evaluated by the Gross Protein Value (GPV) procedure as supplements to cereal protein for chicks and in addition Net Protein Utilisation (NPU), with the samples as the sole protein source for rats, was determined for a limited number.Various chemical and microbiological procedures were applied to the samples in the collaborating laboratories. For fish, meat and whale meals the ‘available lysine’ procedure based on the reactivity of ϵ‐amino groups in the lysine units with fluoro‐2,4‐dinitrobenzene correlated best with the GPV results. For cottonseed meals the results of nitrogen solubility tests correlated well with GPV. Microbiological procedures also yielded some useful co

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121206

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractMany difficulties have been reported in the estimation of calcium and magnesium in plant materials using flame‐photometric methods, the reliability of which has been questioned.In the method described here the effects of interfering ions have been reduced to negligible proportions by using dilute solutions of plant ash, in presence of an excess of sulphate ions, in a flame photometer of high sensitivity. the method gives accurate and reproducible results for a wide range of vegetable tissues, but it has certain limitations at low calcium concentrations, especially in presence of large amounts of phosphate and aluminiu

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121207

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe anaphylactoid shock in guinea pigs, produced by enzymic casein hydrolysates, has been determined byin vivotests and by the Schultz‐Dale technique. Hydrolysates with low transmittances are more prone to produce anaphylactoid reaction than those with high transmittances. A study has been made of the possible conditions of manufacture that might affect the properties of the hydrolysates. Factors, such as efficiency in the filtration processes, drying temperature and purity of the casein, may play an important part in the degree to which casein hydrolysates can produce anaphylactoid reaction

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121208

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe antigenicity of twenty‐eight samples of enzymic casein hydrolysates was determined byin vivotests and their foaming properties studied. the results show that hydrolysates which produce stable foam tend to be antigeni

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121209

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY

摘要:

AbstractThe LD50and time for action on locusts are recorded for a number of insecticides.

ISSN:0022-5142    

DOI:10.1002/jsfa.2740121210

出版商:John Wiley&Sons, Ltd    

年代:1961

数据来源: WILEY