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Quality evaluation of some food legumes
1999
Ahmad, K.E.A.
Texture and rheologycal properties of milk and milk products
1999
Golc-Teger, S. (Ljubljana Univ. (Slovenia). Biotechnical Fac., Zootecnical Dept.)
In food technology, judgements of the products by sensory assessment are as important as instrument measurement in quality evaluation. Structure determines both the texture (perception the senses) and measurement of the rheological properties of a food, the study of texture is often regarded as subjective rheology. In the article, the relationship between sensory evaluation of texture and rheology measurement for quality evaluation of milk and milk products is described.
Mostrar más [+] Menos [-](Quality evaluation of "baumkuchen" [digital image analysis])
1999
Ludewig, H.-G. | Wolf, S. | Beckmann, E.
Zur Unterstutzung der sensorischen Beurteilung von Baumkuchen ist die Messung der Schichtdicke hilfreich. Mit einer normalen PC-Ausstattung, einem Flachbettscanner und der Software "Gebackanalyse" lasst sich die Schichtdicke und -gleichmassigkeit von Baumkuchen schnell ermitteln. Damit besteht die Moglichkeit im Betrieb eine Qualitatsbeurteilung in Form der Lockerung, Porenstruktur und Ringgleichmassigkeit sowie eine Qualitatskontrolle mit Dokumentation der Produktgleichmassigkeit durchzufuhren. Das Verfahren wird kurz beschrieben.
Mostrar más [+] Menos [-][Consumer evaluation of CMA quality label beef]
1999
Anon.
Evaluation of fruit selections for processing quality
1999
St. Pierre, Richard Guy
Evaluation of farmers' perceptions of soil quality indicators
1999
Liebig, M.A. | Doran, J.W.
Understanding farmers' knowledge of soil quality and health is essential to ensure transfer of appropriate technology for on-farm assessments. The objective of this study was to evaluate farmers' knowledge of soil quality by comparing their perceptions of soil conditions for "good" and "problem" soils on their farms with values of soil quality indicators as determined by established assessment protocol. Twenty-four conventional and organic farmers throughout eastern Nebraska were paired within regions of similar climate, topography, and soil type and their perceptions of soil quality indicators were queried using a written questionnaire. Questionnaire data were compared directly to values of soil quality indicators and perception accuracy indices were calculated. Overall, perception accuracy of soil quality indicators did not differ between conventional and organic farmers. Farmers' perceptions of soil quality indicators tended to be more accurate for "good" soils as compared to "problem" soils. Indicators that were incorrectly estimated at a frequency greater than 33% included available nitrogen and phosphorus, soil color, degree of compaction, and infiltration rate. Despite this, farmers' perceptions were correct or nearly-correct over 75% of the time for the majority of indicators evaluated in the study. Evaluation of social and managerial factors indicated that perception accuracy of soil quality indicators declined as the time of on-farm tenure increased. Results from this study indicate that agriculturists should seek out farmers' knowledge of soil characteristics as a first iteration to point-scale evaluation of soil quality.
Mostrar más [+] Menos [-]Fruit quality evaluation of plantains, plantain hybrids, and cooking bananas
1999
Ferris, R.S.B. | Ortíz, R. | Vuylsteke, D.R.
Triploid plantains (Musa AAB) are among the most important horticultural crops of West Africa. However, all landraces are susceptible to black Sigatoka, a fungal disease caused by Mycosphaerella fijiensis, Morelet. To ameliorate the spread of this epidemic, exotic triploid cooking bananas (ABB), with resistance to black Sigatoka, were introduced into West Africa and new disease resistant polyploid Musa (AAAB) germplasm developed through conventional cross-breeding of French plantains (AAB). To ensure that released materials would compete with landraces on a fruit quality basis, an evaluation methodology was developed to compare exotic and hybrid Musa genotypes with West African triploid landraces. Tests showed that plantain hybrids and cooking bananas had heavier bunches than plantain landraces. The plantain hybrids generally produced more but smaller fruit compared with False Horn plantain (AAB). The fruit ripening time of plantain hybrids and the cooking banana cultivar Pelipita was longer than that of plantain landraces, and selected plantain hybrids had fruit with a dry matter content similar to that of the female parent. The fruit of ripe plantain landraces had a firmer texture than plantain hybrids and the landraces Agbagba and Bobby Tannap had lower levels of soluble solids at specific stages of ripening compared with the other Musa germplasm. These results showed that simple physical tests can be used to select for higher quality cooking bananas and plantain hybrids and that specific plantain hybrids, within the test group, showed a higher potential for market acceptance. © 1999 Published by Elsevier Science B.V. All rights reserved.
Mostrar más [+] Menos [-]Evaluation of table potato quality in retail trade
1999
Sowa-Niedzialkowska, G. (Plant Breeding and Acclimatization Institute in Radzikow, Jadwisin (Poland). Dept. of Potato Preservation and Processing)
In this paper are the results of two-year research presented (1996-97). The results estimate table potato quality in retail trade in Warsow. According to the findings the quality of the potatoes does not meet requirements for the table potatoes formulated in Polish standards. This concerns both external and internal defects. Only nitrates, glicoalcaloids content and after cooking darkening are adequate
Mostrar más [+] Menos [-][Aspects of the quality evaluation of smoked-cured fish]
1999
Vyncke, W. | Declerck (Centrum voor Landbouwkundig Onderzoek, Oostende (Belgium). Dept. Zeevisserij)
The evaluation of quality by chemical composition of tea
1999
Yajima, Y. (Gifu-ken. Agricultural Research Center (Japan)) | Yoneyama, S. | Kuwabara, T.
