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Dissertation
Study of the physicochemical and functional properties of vegetable proteins used in the formulation of a UHT industrial product
Authors: --- --- --- --- --- et al.
Year: 2018 Publisher: Liège Université de Liège (ULiège)

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Abstract

For several decades, following changes in consumption patterns, food industries have been aiming to replace animal protein with vegetable protein. Moreover, as a result of population growth, it is essential to identify new non-conventional sources of protein. Among these sources, pea is currently booming. In addition to health, environmental and political interest, this legume is highly appreciated by food industries for its techno-functional properties such as foaming, emulsifying and gelation capacities. Nevertheless, the use of pea proteins in foodstuff formulation is hindered by the heterogeneity of their techno-functional properties. Therefore, this master thesis aimed to study the chemical, physical and functional characteristics of various pea protein isolates. Firstly, a chemical characterization revealed a standardization of dry matter and protein contents. However, significant differences where observed between the ash, lipid and carbohydrate contents. Secondly, several SDS-PAGE electrophoreses revealed variations between the different protein profiles. While the albumins, legumins and vicilins were common to all samples, some of them were distinguished by the presence of convicilins and an unidentified 80 kDa protein fraction. Moreover, qualitative analyses showed significant differences between the samples and highlighted a link between the albumin and legumin contents. The lower the albumin content, the higher the legumin content. It led to the establishment of classes of protein isolates but independently of the previous chemical characterization. Afterwards, several DSC experiments demonstrated the partial denaturation of proteins in relation to the protein profile. Indeed, the lower the albumin content and the higher the legumin content, the higher denaturation degree. In addition, the results showed the impact of the UHT treatment, carried out during the industrial process, on the denaturation degree. Then, significant differences were revealed between exposed SH and total SH contents, regardless the legumin content. Some physical characteristics of protein isolates, such as particle size and colour parameters were also determined. More specifically, the study of the particle size distributions revealed significant differences between the samples and suggesting a variation of grinding parameters during the industrial process. Regarding the colouring parameters, the observed differences suggested a heterogeneity related to the isolate composition or a variation of industrial process conditions. Lastly, first two functional properties such as solubility and water retention capacity were measured. The results did not reveal any link with the chemical and physical characteristics. Nevertheless, they showed the complexity of the interactions between all these characteristics.


Book
Extraction Strategies to Recover Bioactive Compounds, Incorporation into Food and Health Benefits
Authors: ---
ISBN: 3039289705 3039289691 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

We are pleased to present this book, which is a reprint of articles from the Special Issue entitled “Extraction Strategies to Recover Bioactive Compounds, Incorporation into Food, and Health Benefits” published online in the open access journal Foods (ISSN 2304-8158) from 2019 to 2020 (available at: https://www.mdpi.com/journal/foods/special_issues/extraction). Firstly, this book gathers studies addressing several strategies applied to obtain bioactive products and extracts, not only from food matrices but also from agri-food byproducts, which can serve as new natural additives, nutraceuticals, and functional ingredients for pharmaceutical, cosmetics, and food industries. In particular, free and bound phenolic compounds are explored in buckwheat, sesame, and olive leafy byproducts. Overall, these studies outline new valorization methods and offer new opportunities for alternative practices in the agro-industrial sector that help to migrate toward a circular bioeconomy model. This book also presents studies that predict bioactive components in fruits through mathematical tools and support the formulation of a novel beverage rich in resveratrol, a phenolic compound whose bioactivity is well recognized.


Book
New Strategies for Innovative and Enhanced Meat and Meat Products
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Meat and meat products are an important part of the human diet. Even though non-essential, they provide high amounts of protein, vitamins, and minerals in a concentrated form. However, the consumption of meat and meat products has been associated with an increased risk of health-related problems. Once the harmful components of meat and meat products are elucidated, novel technologies can help in identifying, removing, replacing, and/or minimising their deleterious effects. In addition, meat products can be and are being utilised as carriers of added bioactive compounds due to their processing versatility and high worldwide consumption. New strategies in the field of meat and meat product development are certainly needed in order to overcome not only the health-related problems these products might contribute to, but also from the sustainability and economy perspective. This book compiles ten original studies and two comprehensive reviews that will tackle some of these issues.


Book
New Strategies for Innovative and Enhanced Meat and Meat Products
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Meat and meat products are an important part of the human diet. Even though non-essential, they provide high amounts of protein, vitamins, and minerals in a concentrated form. However, the consumption of meat and meat products has been associated with an increased risk of health-related problems. Once the harmful components of meat and meat products are elucidated, novel technologies can help in identifying, removing, replacing, and/or minimising their deleterious effects. In addition, meat products can be and are being utilised as carriers of added bioactive compounds due to their processing versatility and high worldwide consumption. New strategies in the field of meat and meat product development are certainly needed in order to overcome not only the health-related problems these products might contribute to, but also from the sustainability and economy perspective. This book compiles ten original studies and two comprehensive reviews that will tackle some of these issues.

Keywords

Research & information: general --- Biology, life sciences --- Technology, engineering, agriculture --- oleogel --- emulsion gel --- dry fermented sausages --- healthier lipid content --- chia oil --- olive oil --- spice --- ingredient --- colour --- ready-to-cook --- meat preparation --- meat extenders --- meat products --- meat substitutes --- sustainability --- plant-based proteins --- insects --- by-products --- pulses --- mushrooms --- beef burgers --- soluble fiber --- TPA --- consumer evaluation --- fatty acid composition --- Juniperus communis L. --- essential oil --- sodium nitrite --- dry fermented sausage --- traditional wet market --- food product's label --- nutritional information --- willingness to pay --- meat --- authentication --- triacylglycerols --- ambient mass spectrometry --- DNA --- PCR --- iota carrageenan --- chemical composition --- consumer acceptance --- descriptive analysis --- ham --- ostrich --- phosphate --- polysaccharide --- processed --- restructured meat --- sensory profile --- plant-based meat analog --- commercial texture vegetable protein --- texture soy isolate protein --- methylcellulose --- phosphate elimination --- emulsified meat products --- proteins --- standardized meat matrix --- clean label --- nitrites alternatives --- phosphates alternatives --- coffee by-products --- chicken burger --- meat formulation --- cooking yield --- volatile compounds --- warmed off-flavours --- oleogel --- emulsion gel --- dry fermented sausages --- healthier lipid content --- chia oil --- olive oil --- spice --- ingredient --- colour --- ready-to-cook --- meat preparation --- meat extenders --- meat products --- meat substitutes --- sustainability --- plant-based proteins --- insects --- by-products --- pulses --- mushrooms --- beef burgers --- soluble fiber --- TPA --- consumer evaluation --- fatty acid composition --- Juniperus communis L. --- essential oil --- sodium nitrite --- dry fermented sausage --- traditional wet market --- food product's label --- nutritional information --- willingness to pay --- meat --- authentication --- triacylglycerols --- ambient mass spectrometry --- DNA --- PCR --- iota carrageenan --- chemical composition --- consumer acceptance --- descriptive analysis --- ham --- ostrich --- phosphate --- polysaccharide --- processed --- restructured meat --- sensory profile --- plant-based meat analog --- commercial texture vegetable protein --- texture soy isolate protein --- methylcellulose --- phosphate elimination --- emulsified meat products --- proteins --- standardized meat matrix --- clean label --- nitrites alternatives --- phosphates alternatives --- coffee by-products --- chicken burger --- meat formulation --- cooking yield --- volatile compounds --- warmed off-flavours

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