Food Science Commons^™

Distribution And Intracellular Localization Of Titanium In Plants After Titanium Treatment, G. Kelemen, A. Keresztes, E. Bacsy, M. Feher, P. Fodor, I. Pais

Food Structure

The physiological role of titanium in plants has not been elucidated yet, but a higher rate of growth , greater chlorophyll content and higher productivity, among others , may be attributed to this element. We have investigated the distribution of titanium in wheat seedlings after Titavit (a Ti ·ascorbate containing plant conditioner) treatment applied either through the leaf or through the root. In field experiments, we also sprayed spinach plants with Titavit. We have found a practically unidirectional tran slocation of Ti from the shoot into the root, and a preferential local ization of Ti in the nuclear cell fraction …

Whole Kernel And Bulgur Wheat Preparation And Usage, Georgia C. Lauritzen, Charlotte P. Brennand, Deloy G. Hendricks

All Archived Publications

No abstract provided.

The Segregation Of Wheat For Noodles, Graham Crosbie

Journal of the Department of Agriculture, Western Australia, Series 4

The Western Australian segregation of wheat of selected varieties to cater for the requirements of the established Japanese noodle wheat market and an emerging market for this type of wheat in South Korea started in the 1989-90 season. In this article, Graham Crosbie, who pressed strongly for this segregation, explains the background behind its introduction and the need to ensure its success.

Wheat Quality For The Japanese Flour Milling And Noodle Industries, Graham Crosbie, Dianne Miskelly, Tim Dewan

Journal of the Department of Agriculture, Western Australia, Series 4

About one-third of Australia's wheat production is used in the manufacture of Asian noodles. Japan is one of our most important noodle wheat markets. In that country much of the 900,000 to 1,000,000 tonnes of Australian wheat bought each year is used for noodle production. About 70 per cent of this wheat is Australian Standard White (ASW)from Western Australia. ASWis highly regarded for its suitability for the production of white, Japanese-style noodles. The remainder comprises mainly Australian Prime Hard (APH) which is valued for the production of yellow, Chinese-style noodles and for various breads. This article discusses quality aspects associated …

Vacuole Formation In Wheat Starchy Endosperm, D. B. Bechtel, A. Frend, L. A. Kaleikau, J. D. Wilson, P. R. Shewry

Food Structure

The formation of vacuoles in wheat (Triticum aestivum cv. Highbury) starchy endosperm cells was studied using electron microscopy. Some vacuoles were always present, even in the coenocytic cytoplasm. The first formed endosperm cells were highly vacuolated, but became filled with cytoplasm as they grew older. Various-sized pieces of cytoplasm were found in vacuoles of developing endosperm cells, probably as a result of autophagic sequestration. The membranes of the autographic vacuoles appeared to originate from the rough endoplasmic reticulum and from extensions of already-formed vacuoles. Autographic activity was confirmed by localizing the hydrolytic enzyme acid phosphatase within the vacuoles. The rough …

Cereal Structure And Its Relationship To Nutritional Quality, S. H. Yiu

Food Structure

Factors that determine the digestibility of carbohydrates and minerals in cereals are examined . Most carbohydrates and minerals in cereals are structurally bound, either surrounded by or associated with cell wall components not easily digested by non-ruminant animals and humans. Treatments such as mechanical grinding and heat improve the digestibility of nutrient s . Further processing and cooking result in structural and physeochemical changes of cereal starch, phytate, and dietary fiber. Such changes greatly Influence the physiological and metabolic effects in animals and humans. The digestive breakdown of most nutrient components is also dependent on the activities of enzymes in …

Use Of Image Analysis To Predict Milling Extraction Rates Of Wheats, A. D. Evers, R. P. Withey

Food Structure

Image analysis of grain morphological characteristics was examined as a possible means of predicting extraction rates of a wide variety of wheat types.

Two elevations of grain were examined and measured for the top view whole grains were used, while for the lateral view grains were sagittally bisected in the plane of the crease. Extraction rate was assessed on laboratory mills and expressed as flour yield.

Milling extraction rate correlated with one shape factor with a coefficient of 0.78. Inclusion of a second factor in a stepwise regression increased the correlation coefficient to 0.925.

No satisfactory predictor of extraction rate …

Microstructural Changes In Wheat Starch Dispersions During Heating And Cooling, M. Langton, A. M. Hermansson

Food Structure

Microstructural changes in 8-11% wheat starch dispersions during heating, cooling and cold storage have been evaluated by light microscopy and scanning electron microscopy.

Heat treatment of wheat starch dispersions gives rise to two stages of swelling and solubilization. During the first phase of swelling, solubilized amylose was observed ln the centre of the granules and, to some extent, outside the granules. Further swelling deformed the granules and more amylose was released. When the temperature treatment took place under shear, the outer layer of the swo llen granules fra ctured at 94°C and above, and amylopectin fragments were dispersed into the …

Textural Properties And Structure Of Starch-Reinforced Surimi Gels As Affected By Heat-Setting, J. M. Kim, C. M. Lee, L. A. Hufnagel

Food Structure

The gel forming behavior of red hake (Urophycis chuss) surimi with and without starch and its relationship to the structure of the gel matrix were studied. For surimi gels without starch, a combination of preheat- setting at 40 C and cooking at 90 C resulted in significantly greater gel strength than cooking alone. However, preheat - setting of gels containing wheat or potato starch had no significant effect on gel strength demonstrating an opposite trend in gel strength due to the differences in swelling power, water holding ability and gelatinization temperature between potato and wheat starches. This difference in gel …

Wheat Payments And Protein Content, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

In recent years there has been increasing support from within the Australian wheat industry for the principal of wheat growers recieving payment for their grain according to market value.

Individual loads are now tested for quality characteristics such as hectolitre weight, unmillable material and moisture content.

At present, technology is not sufficiently advanced to enable rapid and accurate analysis of individual loads for all important quality factors.

A more practical system of quality assessment would be one based on allowances for various basic measures (such as hectolitre weight, unmillable material and moisture content), variety (to allow for genetic differences in …

Variation In Wheat Protein Content : The Effect Of Environment, G B. Crosbie, Harry Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

Over the past 20 years, the average protein content of WesternAustralian wheat has ranged from 9.3 to 12.0 per cent, with a mean level of 10.4 per cent. At most grain receival points, in any one season, individual loads can often vary in protein content by as much as 5 per cent protein or more. Rainfall and soil fertility account for much of this variation.

Increasing Protein Content Of Wheat By Breeding, B R. Whan, Graham Crosbie

Journal of the Department of Agriculture, Western Australia, Series 4

The most efficient means of increasing protein content of WesternAustralian wheat is by breeding new varieties with higher inherent protein in their grain. But is this possible without sacrificing yeild or other desirable characteristics?

Trends In Wheat Protein/Yield Relationships, G B. Crosbie, Harry Fisher, Bryan Whan

Journal of the Department of Agriculture, Western Australia, Series 4

The major concern of wheat breeders in WesternAustralia has been to increase grain yield while maintaining quality at an acceptable level. There has been no concious effort to select for protein content. It is of interrest, therefore, to compare the relationship between yield and protein of varieties which have been prominent in Western Australia at various times, to see what effects yield increases have had on protein content and the extent of any variation which might exist.

Microstructure Of Mealy And Vitreous Wheat Endosperms (Triticum Durum L.) With Special Emphasis On Location And Polymorphic Behaviour Of Lipids, A. Al Saleh, D. Marion, D. J. Gallant

Food Structure

Dark inclusions observed in osmiophilic zones, already described in mature wheat endosperm using transmission electron microscopy, were confirmed by freeze-fracture electron microscopy to be lipids. The polar lipids (glycolipids, phospholipids, free fatty acides, monoglycerides) were organized in a liquid crystalline phase. The reversed hexagonal or HII phase should be the main lattice which might arise from the transition of lipids present in membranous structures as a lamellar phase. This transition was caused by dehydration occurring during maturation. It is suggested that the water-dependent lamellar hexagonal phase transitions are of considerable importance in cereal food technology.

The Application Of Light And Scanning Electron Microscopy During Flour Milling And Wheat Processing, R. Moss

Food Structure

Light and scanning electron microscopy have been employed as part of an on-going study on the effect of the milling system on flour composition and quality. Examples are given of some areas where microscopy has been particularly useful in understanding the functional changes that take place during milling or the subsequent processing of the flour . The use of heavy reduction roll pressures was shown to modify gluten protein quality as well as produce the desired increase in starch damage. The use of in-line impact machines not only disrupted flaked flour particles but also fragmented wheat germ and allowed it …

Wheat Breeding, J T. Reeves, N. Roy

Journal of the Department of Agriculture, Western Australia, Series 4

In a normal harvest about 90 per cent of Western Australia's wheat production is exported overseas, where it is used in a wide range of products including noodles, bread, "steamed" bread, chapattis and biscuits

Wheat breeders in W.A. therefore have the problem of developing new varieties suited to many end uses, not all of which have the same quality requirements.

Wheat Quality In W.A, J A. Parish

Journal of the Department of Agriculture, Western Australia, Series 4

Three separate quality classes or categories of wheat are now received by C.B.H. These are a soft biscuit wheat, a hard bread wheat and a mixed grain suitable as a filler wheat in bread-making and for making noodles.

In this article the basis of quality differences between these classes of wheat is described and some of the terms and concepts used in distinguishing between cultivars (varieties) and classes of wheat are discussed.

Grain Hardness Investigation, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

No abstract provided.

Biscuit Wheat In W.A, G H. Jones, J. A. Parish, H. J. Moss

Journal of the Department of Agriculture, Western Australia, Series 4

Following small scale trials in the production and evaluation of Gluclub wheat in 1970 and 1971, farmers have been asked to produce 20,000 tons of this variety for the 1972/73 season.

The background of this attempt to establish a class of soft or biscuit wheat in world markets is described in this article.

Insignia Lowers Wheat Quality, J A. Parish, H. M. Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

Farmers in Western Australia have been advised not to plant Insignia wheat because it has poor grain quality. Many farmers want to know why Insignia is considered poor quality and what harm it could do. This article answers these questions and suggests alternative, better quality wheats for all present situations.

Market Prospects For W.A. Wheat, William John Toms, J. A. Parish

Journal of the Department of Agriculture, Western Australia, Series 4

WITH the Western Australian wheat industry valued at $100 million per year and subject to production restrictions, can market prospects be improved?

What types of wheat should we produce? Can we increase sales by segregating specific types from the present crop? This article discusses the changes in W.A. wheat production that would be necessary to suit specific markets.

Wheat Quality Surveys In Western Australia, J A. Parish, G. H. Jones

Journal of the Department of Agriculture, Western Australia, Series 4

SINCE 1956 a number of collaborative wheat quality surveys have been carried out in Western Australia by Co-operative Bulk Handling Co. Ltd. and the Department of Agriculture.

The work was undertaken to provide facts which may be used to determine the possible advantages to this State's wheat industry of alterations in the receival and marketing arrangements.

The various surveys are described in this article.

Wheat Yield Tests In W.A, H M. Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

WHEAT production is the major crop industry in Western Australia so emphasis has been placed on this crop in variety tests.

Over the last 5 years 61 wheat varieties, including 30 named varieties from various sources, have been tested in variety trials.

The Biology And Ecology Of Trogoderma Glabrum (Herbst) In Stored Grains, Benjamin H. Kantack, Robert Staples

Nebraska Agricultural Experiment Station: Historical Research Bulletins

These investigations were undertaken to determine the distribution and importance of Trogoderma glabrum (Herbst) in stored grain in Nebraska, the ecological factors favoring population increase in stored wheat, corn, and sorghum, and the role T. glabrum might play in disseminating internally the Aspergillus molds commonly encountered in stored grain.

Yield And Flour Quality Of Early Maturing Wheat Varieties, J A. Parish, J. T. Reeves

Journal of the Department of Agriculture, Western Australia, Series 4

DESIRABLE milling characteristics have for many years ensured a ready market for Australian wheat. Present demand for Australian wheat is strong and the sale of the 1961 harvest is assured.

Cereal Products Adviser J. A. Parish, B.Sc. (Agric.) and Plant Breeder J. T. Reeves, M.Sc. (Agric.) describe and explain the tests on the results of which wheat variety recommendations are based.

Detailed results of yield and quality tests from early maturing wheat variety trials are included.