Sökresultat:
229 Uppsatser om Cereal starch isolation - Sida 1 av 16
Establishment and evaluation of a Barley starch isolation method with focus on representability
The high viscosity of barley material makes starch isolation problematical using regular methods established for cereals. An adjusted starch isolation method has been set up for barley, based on fractionation and purification. The focus is on attaining truly representative isolates of six flour samples selected for widely differing characteristics within the research program BarleyFunFood (BFF). Beside establishment of the method, this diploma work aspires to serve the BFF with isolated material of sufficient yield valid for further starch characterisation. A pre study was conducted evaluating available wet mixing equipment, experimental conditions and mode of procedure.
Long-term Storage of Starch Potato and its Effect on Starch Yield
Lyckeby Starch AB is a farmer-owned company that produces products based on potato
starch. In order to increase their production efficiency and their international competitiveness
the company is investigating the possibilities of keeping their factories open longer. To
achieve this, potato has to be stored for a longer period of time than what is practiced today.
Starch potato is usually stored in large piles covered by straw and plastic, either in the field or
on the farmyard.
The objective was to examine in what way starch yield (starch content*tuber weight) in
three different potato varieties was affected by storage in two different types of storage piles.
The potato was stored for three months in total and starch content and tuber weight were
controlled throughout the period. Stored tubers were also visually examined and prescense of
mechanical damage as well as wet rots and dry rots was recorded. Bacteria and fungi were
isolated and identified.
In general, varietal differences were greater than differences between the storage piles.
Stärkelsers funktion som konsistensgivare vid olika temperaturer i pulversoppa : en experimentell kvantitativ studie
More often consumers demand instant dry soup that can be prepared with a water temperature below 100o C, which is currently not possible, because the dry soup becomes too thin when using water with a lower temperature. In this study, various kinds of starch studies were made to optimize the starch used in the existing product to make it more viscous at both high and low temperatures. The result was that one of the two starches present in the existing product was retained by change in quantity as it contributed to important flavor parameters. The second was removed and replaced with a starch that made the product more viscous at lower temperatures. To find out if the new product differed from the existing product a viscosity measurement and a sensory paired preference test were made.
Cassava as an additive in biomass fuel pellet production :
In this study, the effects of using fine milled cassava stems as an additive in biofuel pellet production was compared to the effects of refined starch addition. The bulk biomass fuel raw material, to which the additive was added, was a blend of spruce and pine sawdust. An experimental design in the factors cassava/starch content, moisture content and material temperature was used. Measured responses were pellet bulk density, pellet durability, amount of fines, pelletizer motor current, pellet temperature, die temperature and CV for pelletizer motor current (a measure of process stability). Each response was modeled by multiple linear regression (MLR).
Lönsam produktion av stärkelsepotatis : timing och skördeanpassade åtgärder
During the cultivation season there are a several cropping activities to carry out. At what time these activities are carried out is affecting the result and also on the economy of the crop production. As the production costs are high in potato production, it is important to keep an eye on the economy. Profitability is the most important factor in most crop production systems. If the costs are not covered, it is difficult to justify the production.
Riskfaktorer för uppkomst av neurologisk sjukdom vid infektion med EHV-1
During the cultivation season there are a several cropping activities to carry out. At what time these activities are carried out is affecting the result and also on the economy of the crop production. As the production costs are high in potato production, it is important to keep an eye on the economy. Profitability is the most important factor in most crop production systems. If the costs are not covered, it is difficult to justify the production.
Hästägares kunskapsnivå och attityder angående hästutfodring
Horse owner?s knowledge about horse feeding and nutrition is directly linked to the horse?s health and welfare. According to several studies, both Swedish and foreign, horse owners generally have inadequate knowledge about horse feeding. The housing systems and feeding routines of today differs in many ways from what horses have adapted to through evolution. Wild horses live in harem herds and roam on large open fields, spending about 60 % of the day grazing, mainly grass and herbs.
Barley starch, structure and properties
Starch is a naturally occurring substance in most plants and is used as energy storage. It is a component that mainly consists of amylose and amylopectin. Together they build a complex pattern which gives starch its specific properties. The proportion of amylose and amylopectin varies in different plants but generally starch consists of 25 % amylose and 75 % amylopectin. There have been discoveries of barley varieties containing 100 % amylopectin called ?waxy starches? or ?waxy barley? as well as varieties that have a high content of amylose, around 70 % and these are called ?amylotypes?.
Framtagning av ett nytt recept för clear-coat batter av pommes frites : En teknisk och sensorisk utvärdering
The requirements of good quality and appetizing fast food increases continuously as a consequence of a community where food is always available. The crispiness of French fries is an issue that must be considered in this context, since it tends to decrease and give the fries a soft surface not appreciated by the consumer. To prolong the crispiness, the fries can be coated by a batter, a mix of starches. The batters used often consists of modified starches, e.g. cross-linked, acetylated and dextrinizated to increase and prolong crispiness, flour to stabilize the batter and sodium bicarbonate to make the batter ?rise?.The cross-linked starch keeps the granules in a swelled state and prevents them from breaking when exposed to heat or processing: therefore, it delays the gelatinization and decreases the stickiness of the batter.
Stärkelsenedbrytningens betydelse för mjölkkors konsumtionsmönster och mjölkproduktion :
Feed intake in dairy cows is regulated by a variety of factors influencing hunger and satiety.
One of the regulation systems includes the short chain fatty acids produced during feed
degradation in the rumen. Starch can be digested either in the rumen where short chain fatty
acids are produced or in the small intestine where glucose is the end product. Since glucose
does not have the same effect on satiety that short chain fatty acids have, the site of starch
digestion might be an important factor that affects feed intake and milk production. The aim
of this study was to investigate the effects of site of starch digestion on feeding behaviour
(feed intake, consumption time, and eating frequency) and milk production.
Because feeding behaviour is closely connected to the cows? environment, the study also
included observations of behaviour.
Three different feed rations were compared.
Skyddande isolering i samband med stamcellstransplantation : Patienters upplevelser av den skyddande isoleringen samt uppfattningar om sjuksköterskans roll under vårdtiden
When going through a stem cell transplantation a patient is forced to undergo protective isolation to inhibit risk of opportunistic infections related to the low leucocyte count as a result of aggressive pre-transplant chemotherapy treatment. Protective isolation has shown to have an impact on patient experiences during treatment and the aim of this study is to elucidate experiences of protective isolation of patients undergoing hematopoietic stem cell transplantation and to deduce patient perceptions of the role of nurses in protective isolation care. The presented study was performed as a mixed qualitative and quantitative survey at a hematopoietic ward in Sweden. Results were analyzed by Mayring (2000) and by descriptive frequency charts and show that patients in protective isolation experience alienation, necessity, safety and anxiety with regards to their protective situation. Considering the role of nurses patients perceive their role to be attendant, informant and acting as an executioner of medical implementations.
Funktionskontroll av stegljudsisolering vid konstnärligt campus i Umeå
This report's aim is that by field measurements determine the function of Aprobo soundproofing material dB2 for reducing impact sounds, the measurements is done in ?the school for fine art? in Umeå also known as ?konstnärligt campus building nine?. The construction technique is used in areas sensitive to impact sound between different floors in the building. The measurement?s is also to do a function control of the buildings sound quality compared to Swedish and European standard when it comes to air sound, impact sound and reverberation time .
Patienters upplevelse av att vårdas i isolering : en litteraturöversikt
Background: Isolation care may be necessary when a patient is carrying infection or is being inflicted with disease that causes deficit immune system. Being isolated means that the patient is in a confined space and may stay only there. Even in ancient times, people discovered the importance of isolating people carrying an infection from the rest of society. According to the Infectious Diseases Act, patients should be isolated in order to reduce the spread of infection both from the patient to the surroundings as well as the opposite. Isolation care can be psychologically stressful for some patients.
Tritordeum : evaluation of a new food cereal
Tritordeum is the result of a cross between a wild barley (Hordeum chilense) and durum wheat (Triticum turgidum). Tritordeum have high viscosity and a nice yellow colour. The objective of this thesis was to evaluate Tritordeum lines HT 354, HT 361, HT 437, HT 2218 (JB3) and HT 1608 (JB1) for use as a new raw material within the food industry. Analyses made were on dietary fibre, fructan, ash, water content and colour. Compilation of data from analyses made for Agrasys an Agri-Food company in Barcelona having the commercial rights to Tritordeum, included Lutein and rheological properties.
Patienters beskrivning av att vårdas på isoleringsrum -en litteraturstudie
Background: Every day patient´s get isolated in hospitals as a consequense of infection control purposes. Physical isolation can result in lack of human contact and a new unknown environment for the patient. Those two factors can easily cause stress within the patient and create anxiety for the future. Aim: The aim of the study was to describe patient´s experience of being nursed in an isolation room. Method: The method that was used was a literature research, where earlier research findings were read and put together.