摘要:

AbstractDie Verformung von kompaktierbaren Haufwerken aus Naturstoffen wird bislang mit der bekannten Pressengleichung beschrieben. Weitgehend unbekannt sind die stoffspezifischen Größen: “Horizontaldruckverhältnis” und “Reibungskoeffizient”. In einer speziellen Versuchsapparatur wird am Beispiel von unterschiedlich konditionierter Radialdruckprofilen bestimmt. Hieraus lassen sich Horizontaldruckverhältnisse und Reibungsbeiwerte ableiten. Die Ergebnisse sind als Beitrag zur Auslegung von Gassperrstrecken beim kontinuierlichen Ein‐und Austrag von Saatmaterial in und aus Druckbehälter(n) anzusehen. Gleichzeitig wird zum besseren Verständnis der Vorgänge bei der Fest/Flüssig‐Trennung durch Abpreßvorgänge insbesondere der Einfluß des Saatölgehaltes während der mechanischen Druckb

ISSN:0931-5985    

DOI:10.1002/lipi.19890910602

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractSunflower contains, in addition to oil, considerable amount of protein, therefore, a very important aspect in processing sunflowerseeds is to obtain high quality, well utilizable meal. The quality of meal is mainly dependent on hull content and consistency and these two factors can be favourably changed by dehulling techniques and special treatment. On the basis of average data in Hungary, without dehulling, hull content of the meal was 46–48%, as a result of a dehulling technique developed by the industry, however hull content dropped to 20–22%, thus, min. 40% protein content has been attained, In the course of the efficient technology, dehulling is carried out in dehulling drums operating on the principle of the beating and/or centrifugation adjusted to seed quality, and separation of the hull and kernel is gradually performed by size‐gradign and aspiration. With a view to minimum loss of oil, the huge amounts of selected hulls are passed through a hull‐cleaning device, then burned in special hull‐burning boilers, thus utilizing its energy for the generation of steam. In our experience, the feeding of monogastrics, especially of young animals requires even higher standards of meal quality than described above, where hull consistency in the meal can be favourably changed by chemical and/or mechanical treatment. Thus, in the rearing and finishing feeds of broilers, 50‐75% of the soybean can be satisfactorily replaced by the above sunflower meal, supplemented by lysine, and can be favourably utilized as a fodder product for pi

ISSN:0931-5985    

DOI:10.1002/lipi.19890910603

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractNonane‐2,4‐dione and 3‐mehthylnonane‐2,4‐dione were identified in reverted soya‐bean oil. The odour threshold of the latter compound, which smelled “lard‐like, strawy, fruity”, was very low (0.01 ng/1 air) in comparison to that of the nonane‐2,4‐dione (3.9ng/1 air). Based on its odour properties and the result of an aroma extract dilution analysis, which have been recently reported (Fat Sci. Technol.90, 332 [1988]), it was concluded that 3‐methylnonane‐2,4‐dione contributed very strongly to the reversion odour of soya‐bean oil. 3‐Methylnonane‐2,4‐dione, 3,7‐dimethyloctane‐2,4‐dione, decane‐2,5‐, ‐3,5‐and‐ ‐4,5‐dione, 3‐oxo‐ and 5‐oxodecanal were prepared as reference for the identification experiments. The spe

ISSN:0931-5985    

DOI:10.1002/lipi.19890910604

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractDie Murmeltieröle, denen antiphlogistische Wirkung zugeschrieben werden zeichnen sich durch einen hohen Anteil an ungesättigten Fettsäuren mit einem charakteristischen Verhältnis von Linolen‐ zu Linolsäure von 2 : 1 aus. Die Triglyceride des Öls ausMarmota bobacwurden mit reversed‐phase HPLC unter isokratischen Bedingungen analysiert. Die Identifizierung der einzelnen Peaks erfolgte mittels Standardsubstanzen, die durch Lipase‐katalysierte Umesterung von uniformen Triglyceriden hergestellt wurden. Die vier Hauptpeaks wurden als Linolenoyldioleoyl‐und Dilinoleoyloeleoyglycerine (11.2%), Linolenoyloleoylpalmitoyl‐ und Dilinoleoylpalmitoylglycerine (8.3%), Trioleoylglycerin (11.2%) und Dioleoylpalmitoylglycerine (11.1%) identifiziert. Bei Einsatz der uniformen Triglyceride der vier Hauptfettsäuren wurde durch enzymatische Umesterung ein dem natürlichen Öl entsprechendes Triglyc

ISSN:0931-5985    

DOI:10.1002/lipi.19890910605

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractTen solvent systems representing a wide range in polarity were highly variable in their abilities to extract the total lipids from field pea and lentil flours and starches. Propanol/water (3 : 1v/v) extracted the most lipid from lentil flour and both legume starches. Chloroform/methanol (2:1 v/v) and benzene/ethanol (4:1 v/v) gave consistently high recoveries of total lipids from both flours but appeared to be less effective with starches. Fractionation of the purified flour lipids demonstrated that propanol/water extracted phospholipids and glycolipids quite efficiently but chloroform/methanol and benzene/ethanol gave high recoveries of both nonpolar and polar lipids. These neutral, phospho‐ and glycolipids from the two legume flurs were highly polyunsaturated, containing 35–50% linoleic and 5–21% linolenic acid, and would be susceptible to oxidative rancidity. Purified lipids from legume starches were recovered as neutral lipids primarily and yields were ver

ISSN:0931-5985    

DOI:10.1002/lipi.19890910606

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractThe seed oil ofKydia calycinais found to contain the following acids (Wt%): Lauric 3.7, myristic 6.0, palmitic 4.9, stearic 11.4, arachidic 2.8, behenic 2.5, oleic 60.6, linoleic 5.3, and cyclopropenoid fatty acid content 2.9.

ISSN:0931-5985    

DOI:10.1002/lipi.19890910607

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

摘要:

AbstractDesludging water originates from the process of technological stream production in steam boilers. It contains considerable quantity of accumulated heat and high concentration of OH‐ ions. It is necessary to find a possibility of more rational usage of this heat, as well as the possibility of the usage of this heat for the processes consuming water with high OH‐ ion concentration. This paper presents an analysis of desludging water and offers a few solutions for using it as a considerable heat and OH‐ ion concentration accum

ISSN:0931-5985    

DOI:10.1002/lipi.19890910608

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

ISSN:0931-5985    

DOI:10.1002/lipi.19890910611

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

ISSN:0931-5985    

DOI:10.1002/lipi.19890910612

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY

ISSN:0931-5985    

DOI:10.1002/lipi.19890910613

出版商:WILEY‐VCH Verlag    

年代:1989

数据来源: WILEY