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Dissertations / Theses on the topic 'Coloured acidic'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Sundqvist, Bror. "Colour changes and acid formation in wood during heating /." Luleå, 2004. http://epubl.luth.se/1402-1544/2004/10.

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2

Donetti, Manuela. "Postharvest biochemical and physiological characterisation of imported avocado fruit." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7672.

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Difficulties in controlling and forecasting avocado fruit ripening and the highly perishable nature of the crop once harvested, are the major causes of concern for avocado traders. In particular, the simultaneous presence of many suppliers may account for increased fruit variability during ripening. Avocado is a climacteric fruit with consistent ethylene production after harvest which is also related to high perishability. However, the mechanisms regulating ethylene biosynthesis and mesocarp softening are not completely understood. In order to study such effects, avocado fruit from different g

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3

Daniels, James Alexander. "Analysis and identification of colour formers in terephthalate acid manufacture : implications for poly(ethylene terephthalate)." Thesis, Manchester Metropolitan University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266456.

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4

Tôrres, Adamastor Rodrigues. "Determinação da acidez total de vinhos tintos empregando titulações baseadas em imagens digitais." Universidade Federal da Paraíba, 2010. http://tede.biblioteca.ufpb.br:8080/handle/tede/7168.

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Made available in DSpace on 2015-05-14T13:21:45Z (GMT). No. of bitstreams: 1 parte1.pdf: 2505729 bytes, checksum: e872a92484e063cf1f264ba7b16d9e2e (MD5) Previous issue date: 2010-03-19<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>This work proposes the use of digital images captured by a Webcam for determination of total acidity in red wines by means of an acid-base titration without using an external indicator. Digital images present the colour of the emergent radiation, which is complementary to the radiation absorbed by molecules of anthocyanines present

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5

Paotrakool, Jiraporn. "Studies of de-acidification of pineapple juice and colour development of the recovered solution /." View thesis View thesis, 1994. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030612.140204/index.html.

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Thesis (M.Sc.) -- University of Western Sydney, Hawkesbury, 1994.<br>Thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Food Science, School of Food Sciences, Faculty of Science and Technology, University of Western Sydney, Hawkesbury, 1994. Includes bibliographical references.

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6

Paotrakool, Jiraporn. "Studies of de-acidification of pineapple juice and colour development of the recovered solution." Thesis, View thesis View thesis, 1994. http://handle.uws.edu.au:8081/1959.7/627.

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Pineapple juice of low acid content was prepared by removal of acids by using weakly basic anion exchange resin, IRA-93. The changes in the contents of titratable acid, pH and total soluble solids of model solutions that contained the principal constituents of pineapple juice (citric acid, citrate salt and sucrose) were investigated. The adsorption of individual acids and changes in composition of juice after a de-acidification process were explored. The adsorbed acids were recovered as solutions by some eluants, and studies on colour development in the recovered solutions carried out. The sol

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7

Chido, Chakanya. "Fatty acid composition, colour stability and lipid oxidation of mince produced from fresh and frozen/thawed fallow deer meat." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2479.

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The aim of the study was to determine the fatty acid composition, colour stability and lipid oxidation of fresh mince produced from fallow deer and to evaluate the effect of frozen storage duration on the retail display shelf life of the mince. A total of 31 fallow deer carcasses were used in the study. After cooling for 24hrs, the carcasses were deboned, external fat from the fore and hindquarter muscles removed and individually vacuum packed. For the first trial, seven fallow deer carcasses were used. Meat from the hind and fore-quarters of each carcass was divided into two equal batches per

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8

Saeidi, Ghodratollah. "The effect of seed colour and linolenic acid concentration on germination, seed vigour, seed quality and agronomic characteristics of flax." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27429.pdf.

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9

Liu, Xing, and s3072856@student rmit edu au. "Electrical Impedance Spectroscopy Applied in Plant Physiology Studies." RMIT University. Electrical and Computer Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080428.092529.

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Electrical Impedance Spectroscopy (EIS) is a relatively new method applied to food quality assessment. EIS allows relatively inexpensive assessment, is fast, easy to operate and non-invasive. It has been adopted for investigation of fundamental electrical properties of plant tissues. Although the applications of EIS for food quality determination have been reported previously, the analytical relationships between electrical impedance properties and quality criteria have not yet been fully developed. Further exploration is thus important in acquiring more data on electrical impedance characteri

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10

Tikk, Kaja. "The influence of feeding and aging on pork quality /." Uppsala : Dept. of Food Science, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200791.pdf.

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11

Saxton, Valerie Patricia. "Influence of ripening grape compounds on behavioural responses of birds." Phd thesis, Lincoln University. Agriculture and Life Sciences Division, 2004. http://theses.lincoln.ac.nz/public/adt-NZLIU20061207.121738/.

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Vineyards in New Zealand suffer bird damage caused by several avian species, including blackbirds and silvereyes. The introduced European Blackbird takes whole grapes which reduces yield. The self-introduced Australasian Silvereye pecks on grapes, leaving them on the vine to be further attacked by fungi and bacteria, and the subsequent off-odours can cause grapes to be refused by the winery or to suffer a price-reduction. Bird control methods remain primitive and largely ineffective during the long ripening period of wine grapes. An ecologically sound method to manage and reduce bird pressure

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12

Chih, Hui Jun. "Effect of processing techniques on yield and quality of Western Australian olive oil." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/975.

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Many studies have shown that regular consumption of olive oil lowers the risk of cardiovascular diseases, breast, ovarian and prostate cancers. These benefits are thought to be due primarily to the high level of monounsaturated fatty acids and bioactive phenolic compounds in the olive oil. An increased awareness of these health benefits has led to a significant increase in the demand for olive oil around the world. However, the current production volume of olive oil is unable to meet the increasing demand. The techniques currently used by the industry extract less than 60 % of oil and 10 % of

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13

Jettanapornsumran, Monchanok. "Copigmentation reactions of boysenberry juice : a thesis presented in partial fulfillment of the requirements for the degree of Master of Technology in Food Technology at Massey University, Albany, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/918.

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Colour is one of the main sensory characteristics of berry juice and fruit products and this parameter also powerfully impacts on consumer behaviour. However, the colour of berry juices is unstable and degradation occurs during storage. The main objectives of the project were: to determine the mechanism by which boysenberry juice enhances the colour of other berry juices and to determine if its addition to berry juices will also stabilise the anthocyanin pigments and enhance copigmentation. In this study, total anthocyanin, total phenolic acids, hyperchromic and bathochromic shift and the rate

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14

Torbacke, Marika. "On the Influence of Mixing and Scaling-Up in Semi-Batch Reaction Crystallization." Doctoral thesis, Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3197.

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15

Pham, Duc Nghia. "Investigation of quality changes during intermittent microwave convective drying of fruits." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/128338/1/Duc%20Nghia_Pham_Thesis.pdf.

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This research experimentally and theoretically investigated the complex changes of fruit quality during intermittent microwave assisted convective drying. Mathematical correlations between this advanced drying method and quality attributes were established. It will be of value both for academics and industries by providing a comprehensive understanding of the mechanism of quality change during drying and suggesting optimal regime for quality and process improvement.

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16

Nedeljka, Spasevski. "Uticaj primene različitih izvora prirodnih pigmenata na boju žumanca i ko-ekstrudata na bazi semena lana, lanika i konoplje na profil masnih kiselina u jajima." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107779&source=NDLTD&language=en.

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Zadatak ove doktorske disertacije, koji se sastojao iz dva dela, je bio da se pokaže mogućnost zamene sintetičkih pigmenata, koji se danas koriste u konvencionalnoj proizvodnji jaja, sa prirodnim izvorima pigmenata i njihov uticaj na boju žumanca, kao i mogućnost promene nutritivnog profila jaja dodatkom ko-ekstrudata lana, lanika i konoplje bogatih omega-3 masnim kiselinama u sme&scaron;e za ishranu koko&scaron;i nosilja. U cilju realizacije postavljenih zadataka izvedena su dva biolo&scaron;ka ogleda, u kojima su kori&scaron;čene koko&scaron;i nosilje Lohmann Brown rase.U prvom biolo&scaron;

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17

Loupancová, Blanka. "Studium faktorů ovlivňujících tvorbu těkavých aromaticky aktivních látek v přírodních materiálech." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-233345.

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The production of high-quality foods requires the precise control of factors influencing their quality. The aim of this doctoral thesis was to monitor the influence of sterilization heating and storage time and temperature on selected parameters of model food matrix using suitable physical, chemical and sensory methods. Sterilized processed cheese was chosen as the model matrix. Processed cheeses are milk protein concentrates, produced by melting of mixture of natural cheeses, emulsifying salts, water and other dairy and/or non dairy ingredients. Desirable transformation of this mixture to hom

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18

Goldsworthy, S. A. "Pre-fermentation maceration of pinot noir wine." Lincoln University, 1993. http://hdl.handle.net/10182/1058.

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Two pre-fermentation treatments were investigated in Pinot noir (Vitis vinifera L.) wines. The effects of cold maceration and carbonic maceration on the wines' composition, colour parameters and sensory properties were examined. Cold maceration is a winemaking technique used to increase non-alcoholic extraction in Pinot noir winemaking prior to fermentation. It involves holding crushed grapes with approximately 100-150 mg l⁻¹ SO₂ at low temperatures and is thought to increase the colour, aroma and flavour of the resulting wines. Carbonic maceration uses whole bunches that have undergone anaero

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19

Saxton, V. P. "Influence of ripening grape compounds on behavioural responses of birds." Diss., Lincoln University, 2004. http://hdl.handle.net/10182/28.

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Vineyards in New Zealand suffer bird damage caused by several avian species, including blackbirds and silvereyes. The introduced European Blackbird takes whole grapes which reduces yield. The self-introduced Australasian Silvereye pecks on grapes, leaving them on the vine to be further attacked by fungi and bacteria, and the subsequent off-odours can cause grapes to be refused by the winery or to suffer a price-reduction. Bird control methods remain primitive and largely ineffective during the long ripening period of wine grapes. An ecologically sound method to manage and reduce bird pressure

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20

Miloš, Bjelica. "Uticaj kvaliteta semenki grožđa na bioaktivne komponente i održivost hladno presovanog ulja." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2019. https://www.cris.uns.ac.rs/record.jsf?recordId=110946&source=NDLTD&language=en.

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Podizanje novih zasada i povećanje kapaciteta preradegrožđa povećava količinu otpada sa kojim se suočavaindustrija proizvodnje vina i rakije. Najbolji i najodgovornijinačin upravljanja otpadom je njegovo dalje iskori&scaron;ćenjekao nusproizvoda. U ovoj disertaciji sagledavana je mogućnost iskori&scaron;ćenjanusproizvoda iz različitih faza proizvodnje u vinarijama idestilerijama za dobijanje semenki grožđa koje sukori&scaron;ćene za proizvodnju hladno presovanog ulja. Hipotezase zasniva na činjenici da semenke grožđa raznih sorti izrazličitih faza proizvodnje vina (bela, roze ili crvena vina),

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21

Sardão, Rita Ferreira. "Effect of high pressure processing to extend the shelf life of a functional acorn beverage." Master's thesis, 2019. http://hdl.handle.net/10773/29250.

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The consumption of plant-based beverages can be an excellent way to increase the intake of bioactive compounds promoting consumers’ health. However, unprocessed plant-based beverages have a short shelf life and thermal treatments are usually required, affecting the overall quality of the beverages. High pressure processing (HPP) may be a solution since it has been recognized for retaining nutritional and sensorial quality of fresh foods. The acorn is very abundant in Portugal but still is sub-valorised to the point of staying in the field without any use, despite its high nutritional value, ph

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22

Vally, Sumayya. "Polygraph: a palimpsest pigment factory: a colour plant as a recording device for the sedimented scars on Johannesburg's mining landscape." Thesis, 2015. http://hdl.handle.net/10539/17567.

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The mining that gave rise to Johannesburg as a city has left in its wake pieces of geologically disturbed, disused, and unusable land. These leftover fragments of landscape carry with them, not only memory of the city’s foundations, but scars of the mining processes that now render them unusable - Not only do these vaguescapes have potential for the memory within them to be unearthed, but they are highly polluted, and seek to be reimagined as productive city spaces. The chosen site, an abandoned piece of mineland with a concealed old mine shaft; on the edge of a highway

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23

Roux, Annalie. "Renovation of wastewater for direct re-use in an abattoir." Diss., 1997. http://hdl.handle.net/2263/23864.

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Tertiary treatment methods were tested on secondary effluent from an abattoir biological wastewater treatment plant with the purpose of renovating it for re-use in the abattoir. The colour and dissolved organic matter could be removed to such an extent that the water would comply with water of insignificant health risk (Department of Health). The treatment process sequence proven to be effective in upgrading this water so insignificant health risk standard were coagulation with a polymer blend, separation, ozonation, filtration and activated carbon filtration. The development of biologically a

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24

Algar, Walter Russell. "Towards multi-colour strategies for the detection of nucleic acid hybridization using quantum dots as energy donors in fluorescence resonance energy transfer (FRET)." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=450314&T=F.

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25

Mashavhathakha, Khathutshelo Logan. "Yield and quality of pomegranate on selected geographical areas in Western Cape Province, South Africa." Diss., 2014. http://hdl.handle.net/10500/18409.

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The pomegranate fruit is one of the high valued crops, but there is insufficient information regarding the fruit properties in South Africa. The aim of the study was to evaluate the physico-chemical properties as well as total phenols, anthocyanin, antioxidant, organic sugars and acids of cultivar Wonderful on three locations of the Western Cape. This study was conducted on mature pomegranate fruits harvested in the 2012 and 2013 seasons. Fruit weight (g), length (mm), and width (mm), peel/aril colour and total arils weights (g) were measured. Fruits were also analysed for total soluble solids

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26

Ward, Matthew Norman. "The molecular basis of colour vision in colourful fish : four long wave-sensitive (LWS) opsins in guppies (Poecilia reticulata) are defined by amino acid substitutions at key functional sites." Thesis, 2008. http://hdl.handle.net/1828/2490.

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Comparisons of functionally important changes at the molecular level in model systems have identified key adaptations driving isolation and speciation. For example, recent studies suggest mutations in opsins, the genes that encode retinal photoreceptors, influence colour-based female mate choice and have, thereby, contributed to the radiation of African cichlids. To test the hypothesis that the evolution of elaborate colouration in guppies (Poecilia reticulata) is also associated with opsin gene diversity, long wavelength-sensitive (LWS) opsin genes were sequenced in six species of the family

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