摘要:

AbstractThe physico‐chemical properties of starch isolated from Coleus tuber (Coleus parviflorus) has been investigated. The yield of extracted starch is 14.4% from the raw tuber. The starch behaves like a cereal starch. The granules are 2.5–17.5 um in diameter and show “A” pattern on X‐ray diffraction. The starch exhibits limited two stage swelling and rapid dissolution in DMSO. It has an iodine affinity of 3.63, and the amylose content is 18.18%. The paste viscosity was stable during cooking and has a positive set back unlike cassava starch. The starch was somewhat resistant to amyla

ISSN:0038-9056    

DOI:10.1002/star.19850370702

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

摘要:

AbstractThe molecular properties and granular appearance of a starch from an Indian crocus (Crocus sativus) have been examined by methods involving iodine‐staining, enzymic degradation, gel chromatography and scanning electron microscopy. The granules were relatively small (3 – 15 μm), and had a rough surface and flattened facets indicative of close packing. The amylose content of 27.4% was rather higher than that of many cereal and potato starches but came within the higher end of the range of “normal

ISSN:0038-9056    

DOI:10.1002/star.19850370703

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

摘要:

AbstractThe starch fraction of Pinhão, the seeds of Pinheiro do Paraná (Araucaria angustifolia, Bert, O. Ktze) was easily extracted and represents 21.87% of total weight. The low content of protein, fat and ash accounts for the efficiency of the extraction and purification. Pinhão starch shows an amylose level and strong anionic characteristic similar to corn starch. The round‐shaped granules are smaller than those of cassava and similarly resistent to DMSO solubilization, what suggests a very homogenous granular struc

ISSN:0038-9056    

DOI:10.1002/star.19850370704

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

摘要:

AbstractA comparative study of gamma irradiated glucose and glucose oligomers has been carried out in order to find a suitable model to understand the mechanism of starch radiolysis. Measurements of malonaldehyde and formic acid, produced by irradiation, showed that the quantitative comparison of radiolytic products was not significant for our purpose, which was also confirmed by a literature survey. However, an electron spin resonance kinetic study of several oligomers, irradiated in the powder state, showed that maltopentaose, and to a lesser extent, maltotriose, may be used as models in the radiolysis of starch.

ISSN:0038-9056    

DOI:10.1002/star.19850370705

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

摘要:

AbstractA survey is given of glucose isomerase, its sources, its mechanism of isomerization and its data and properties in three different immobilized forms. In addition, the effect of a number of parameters on the activity of immobilized glucose isomerase has been investigated, e. g. hydrogen pressure, Mg(II) and Ca(II), transition metal ions, borate and sugar alcohols. Immobilized glucose isomerase remains sufficiently active under hydrogenation conditions to maintainD‐glucose andD‐fructose in equilibrium.D‐Glucitol, in contrast toD‐mannitol, has some inhibiting effect on the enzyme action. TheD‐glucose/D‐fructose equilibrium constant is independent of the total sugar concentration (between 0

ISSN:0038-9056    

DOI:10.1002/star.19850370706

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

摘要:

AbstractPotato juice after removal of all proteins by a thermal coagulation, decolorization, aromatization and addition of preservative can be utilized as a liquid detergent. It has excellent washing properties.

ISSN:0038-9056    

DOI:10.1002/star.19850370707

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

ISSN:0038-9056    

DOI:10.1002/star.19850370708

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

ISSN:0038-9056    

DOI:10.1002/star.19850370710

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

ISSN:0038-9056    

DOI:10.1002/star.19850370715

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY

ISSN:0038-9056    

DOI:10.1002/star.19850370716

出版商:WILEY‐VCH Verlag GmbH    

年代:1985

数据来源: WILEY