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Dissertations / Theses on the topic 'Bioactive properties'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Amissah, Justina. "Bioactive properties of salmon skin protein hydrolysates." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110706.

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Atlantic salmon (Salmo salar) skin was hydrolyzed separately with three different enzymes, trypsin, α-chymotrypsin and papain, for two different times (2 and 4 h). The crude hydrolysates and unhydrolyzed soluble skin proteins were screened for antioxidant, antimicrobial and trypsin inhibitory properties. The antioxidant tests used, - namely, DPPH radical scavenging, metal chelation and reducing power assays, - showed that all hydrolysates and soluble proteins at 2mg/ml possessed antioxidant properties. The trypsin inhibitory tests revealed that at 1mg/mL the hydrolysates obtained from trypsin

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2

Omar, Ulfat Mohammed. "The bioactive properties of pomegranate polyphenol (Punicalagin)." Thesis, University of Surrey, 2014. http://epubs.surrey.ac.uk/810111/.

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Plant polyphenols are reported to have bioactive properties, which may be used for protection against diseases. Therefore, the aim of this research was to investigate the bioactive activities of a pomegranate tannin polyphenol compound, punicalagin. In particular, the antioxidant, antihypertensive and anticancer mechanisms were investigated. Punicalagin was found III pomegranate husk but not in pomegranate juice when analysed by HPLC and LC-MS. Antioxidant mechanisms involved hydrogen peroxide scavenging, ferrous chelating and reducing ability. Higher hydrogen peroxide scavenging activity was

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3

Shrestha, Sanjib K. "Novel Aminoglycosides: Bioactive Properties and Mechanism of Action." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2073.

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Fungicide discovery is relatively neglected when compared to the investment in the development of antibacterial, antiviral, and anti-cancer therapeutics. Due to extensive use of currently available fungicides in agriculture and medicine, resistance is emerging among plant and animal pathogenic fungi. This necessitates the search for novel antifungal agents that are effective and less toxic and that do not promote resistance. FG08 and K20 are novel aminoglycoside analogs synthesized from kanamycin B and A, respectively. The antimicrobial properties of these analogs were tested in vitro against

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4

Leong, Pooi M. "Elucidation of bioactive properties of salmon skin proteins." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/808181/.

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Bioactive peptides are peptides that are able to exert beneficial health effects apart from providing the nutritional aspect. In this study, bioactive peptides were produced and purified from alcalase hydrolysed Salmon skin gelatin. A gel filtration fraction, GF28, was identified as the most potent fraction. A further aim of this study was to investigate the bioactive properties including antioxidant, ACE inhibition, and anti-proliferative activities of the peptide. GF28 exhibited ACE inhibition activity of 46.5 %. Further studies elucidated GF28 acts as a competitive inhibitor of ACE. GF28 al

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5

Rhee, Sang-Hoon. "Preparation and properties of bioactive silica/polymer nanocomposites." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149474.

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6

Yousr, Marwa Nasr. "Bioactive properties of peptides derived from egg yolk proteins." Thesis, University of Surrey, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616894.

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Bioactive peptides can be released, during gastrointestinal digestion or food processing, from many plant and animal proteins and represent an important source of potential health_enhancing components. Therefore, the aim of tIus study is to investigate antioxidant, anticancer and antihypertensive activities of proteins and peptides extracted from egg yolk. Defatted egg yolk (EY) was hydrolysed using pepsin and pancreatin and sequentially fractionated by ultrafiltration, followed by gel filtration (EYGF), resulting in tlu'ee different fractions of which two (EYGF-23 and EYGF-33) effectively inh

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7

Chen, Song. "Glass Ionomer Cements with Improved Bioactive and Antibacterial Properties." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301924.

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Dental restorative cements are placed in a harsh oral environment where they are subjected to thermal shock, chemical degradation, and repeating masticatory force. The ideal restorative dental cements should have superior mechanical properties, chemical stability, aesthetic, good handling properties, biocompatibility, antibacterial properties, and preferably bioactivity. This thesis presents research on dental restorative cements with enhanced properties. The overall aim was to increase the bioactivity and antibacterial properties of dental restorative cements without affecting their other pro

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8

Cattini, Andrea. "Coatings of bioactive glasses and hydroxyapatite and their properties." Limoges, 2013. http://aurore.unilim.fr/theses/nxfile/default/0b3efc8e-0d79-41c7-925c-48710c8e31eb/blobholder:0/2013LIMO4004.pdf.

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Over the last decades, biomedical research has acquired a growing importance. Moreover, the progressive population ageing, with related musculoskeletal disorders, is driving the development of innovative materials for bone implants. Though the production of prosthetic implants is nowadays a mature and well-established practice, the scientific research is constantly evolving with the aim of improving the reliability and effectiveness of the available prostheses, thus increasing their life expectancy. The purpose of the present study is the production of new-generation coatings to support the ad

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9

Bensaci, Mekki F. "The Bioactive Properties of Syringomycin E-Rhamnolipid Mixtures and Syringopeptins." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/247.

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The need for new antimicrobial agents has become important in the last decade due to emerging resistance to a number of conventional antimicrobial agents. New approaches and sources are needed to generate novel and effective antimicrobials. For example, synergistic combinations between two or more agents may lead to new antimicrobial therapies. Furthermore, the increase in health problems caused by the exposure to agricultural crop pesticides and synthetic fungicides and the emerging development of organic farming has increased the necessity to develop natural products than can be used safel

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10

Tedesco, Daniele <1984&gt. "Chiroptical properties of bioactive molecules: sensitivity to conformation and solvation." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6337/1/Tedesco_Daniele_tesi.pdf.

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Chiroptical spectroscopies play a fundamental role in pharmaceutical analysis for the stereochemical characterisation of bioactive molecules, due to the close relationship between chirality and optical activity and the increasing evidence of stereoselectivity in the pharmacological and toxicological profiles of chiral drugs. The correlation between chiroptical properties and absolute stereochemistry, however, requires the development of accurate and reliable theoretical models. The present thesis will report the application of theoretical chiroptical spectroscopies in the field of drug analysi

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Tedesco, Daniele <1984&gt. "Chiroptical properties of bioactive molecules: sensitivity to conformation and solvation." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6337/.

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Chiroptical spectroscopies play a fundamental role in pharmaceutical analysis for the stereochemical characterisation of bioactive molecules, due to the close relationship between chirality and optical activity and the increasing evidence of stereoselectivity in the pharmacological and toxicological profiles of chiral drugs. The correlation between chiroptical properties and absolute stereochemistry, however, requires the development of accurate and reliable theoretical models. The present thesis will report the application of theoretical chiroptical spectroscopies in the field of drug analysi

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12

Fradinho, Patrícia Catarina das Neves Bordalo Branco. "Gluten-free fresh pasta enriched with bioactive compounds." Doctoral thesis, ISA, 2020. http://hdl.handle.net/10400.5/21203.

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Doutoramento em Engenharia Alimentar / Instituto Superior de Agronomia. Universidade de Lisboa<br>Sustainability of the agri-food chain is on today’s agenda, whether through the use of industrial byproducts or the investigation of alternative sources of ingredients. The increasing number of individuals with gluten-related diseases, but also consumers following a gluten-free diet are the drivers for the continually growing number of gluten-free products launched in the market. However, in addition to their still limited commercial availability and high price compared to their wheat counter

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Petoral, Rodrigo M. "Bioactive adsorbates on gold surfaces : structural properties and bio-interaction studies /." Linköping : Linköping University, 2005. http://www.bibl.liu.se/liupubl/disp/disp2005/tek988s.pdf.

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14

Chen, Chujian 1966. "Antitumor properties of kefir : possible bioactive component(s) and mechanism(s)." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85139.

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Research on the putative health benefits has indicated that kefir, a traditional fermented milk, might have antimutagenic and antitumor properties. The major objective of the present thesis was to isolate and identify antitumor compounds in cow's milk kefir and investigate the possible mechanisms involved. High speed centrifugation (HSC), molecular weight cut-off filtration (MWCO), size exclusion high performance liquid chromatography (SEC-HPLC) and reverse phase-HPLC (RP-HPLC) were utilized for fractionation of kefir and a cell culture model was developed to screen for the antiprolifer

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15

Green, Rylie Adelle Graduate School of Biomedical Engineering Faculty of Engineering UNSW. "Conducting polymers for neural interfaces: impact of physico-chemical properties on biological performance." Publisher:University of New South Wales. Graduate School of Biomedical Engineering, 2009. http://handle.unsw.edu.au/1959.4/43337.

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This research investigates the use of conducting polymer coatings on platinum (Pt) electrodes for use in neuroprostheses. Conducting polymers aim to provide an environment conducive to neurite outgrowth and attachment at the electrode sites, producing intimate contact between neural cells and stimulating electrodes. Conducting polymers were electropolymerised onto model Pt electrodes. Conventional polymers polypyrrole (PPy) and poly-3,4-ethylenedioxythiphene (PEDOT) doped with polystyrenesulfonate (PSS) and para-toluenesulfonate (pTS)were investigated. Improvement of material properties was as

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16

Theodore, Ann E. "Bioactive and functional properties of catfish protein hydrolysates and catfish protein isolates." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011260.

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17

Eghtesadi, Neda. "Mechanical properties of resorbable PCL/FastOs® BG composite materials." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13636.

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Mestrado em Materiais e Dispositivos Biomédicos<br>Bioresorbable composites nowadays play an increasingly important role in the modern medicine, especially in orthopaedics for the fixation of bone fractures and tendons. Contrarily to the metallic counterparts, they prevent a second surgical operation to remove them, because they will be gradually integrated in the bone tissues. Finding ways to improve their physical and mechanical properties to better fit the intended specific conditions and environments has been a goal in many researches. It has already established that size, shape, as

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18

Dorman, Hugh Jude Damien. "Phytochemistry and bioactive properties of plant volatile oils : antibacterial, antifungal and antioxidant activities." Thesis, University of Strathclyde, 1999. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21318.

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Aromatic and medicinal plants have been recognized since antiquity as possessing biological activities; chief amongst these are their antibacterial, antifungal and antioxidant properties. In this study, the chemical composition, the antimicrobial and in vitro antioxidant bioactivities the volatile oils extracted by hydrodistillation from aromatic and medicinal members of the plant families Geraniaceae: geranium (Pelargonium graveolens L'Herit); Lamiaceae: melissa (Melissa officinalis L.), monarda (Monarda citriodora var. citriodora Cerv. ex Lag.), oregano (Origanum vulgare ssp. hirtum (Link) L

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Wilberforce, Samuel Isaac Jojo. "Processing and properties of bioactive bioresorbable polymer-calcium phosphate composites for orthopaedic applications." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610046.

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Kayitesi, Eugenie. "Micronisation of cowpeas : the effects on sensory quality, phenolic compounds and bioactive properties." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/32972.

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Cowpeas (Vigna unguiculata L. Walp) are legumes recognised as a good source of proteins in developing countries. Cowpeas are mostly utilised as cooked whole seeds. This is often achieved only after boiling for up to 2 hours, resulting in high energy consumption and a long time for food preparation. Micronisation of pre-conditioned cowpeas (± 41 % moisture at 153 °C) reduces their cooking time. During micronisation, cowpea seeds are exposed to electromagnetic radiation with a wavelength range of 1.8 to 3.4μm. For biological materials, the penetration of infrared rays into the food materia

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21

Mulder, Riaan. "An in vitro study of the properties of GICs with bioactive biomaterial modification." University of the Western Cape, 2019. http://hdl.handle.net/11394/7038.

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Philosophiae Doctor - PhD<br>The fluoride release and chemical adherence to tooth structure remain the most desirable features of glass ionomer restorative cements (GICs). Although the physical properties for multi-surface restorations are well-defined, even with the introduction of newer GICs not all demands have been met. Yet, increased use of GICs will only be possible if clinicians change their perceptions of the low survival rate of GICs. The lower clinical success rate of GICs is partly due to the marginal integrity and wear over time, which has often been recorded in the literatur

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22

Espe, Austin Alexander. "Phenolic Bioactive-Linked Antioxidant, Anti-Hyperglycemic, and Anti-Hypertensive Properties of Serviceberry and Blackberry." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/29796.

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Production and consumption of edible berries are increasing rapidly in the United States, mostly due to their superior flavor profile, and popular diet-related value with their human health relevant bioactives and nutritional benefits. However, bioactive and nutritional qualities, especially human health protective phenolic antioxidants and associated non-communicable chronic disease (NCD) relevant health benefits of berries vary widely among accessions/cultivars and due to different production practices (organic vs conventional). Therefore, the aim of this thesis was to screen and select high

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23

Illsley, Matthew. "The osteogenic properties of novel bioactive and nanostructured biomaterials for mesenchymal stromal cell differentiation." Thesis, University of Brighton, 2011. https://research.brighton.ac.uk/en/studentTheses/24c11336-ddd5-4480-956b-9d50099d4146.

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Soybeans have been in the human diet since the first millennium BC. They contain three major types of isoflavone, genistein, daidzein and glycitein. All three have been shown to have a powerful antioxidant effect and bind to oestrogen receptor beta with high specificity. It has been demonstrated that dietary soybeans favourably impact bone health in postmenopausal women by lowering the incidence of osteoporosis. The literature shows that genistein supplementation reduces marrow stromal cell (MSC) differentiation to an adipocytic pathway and may favourably stimulate osteogenesis. More recently

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Negahi, Shirazi Ali. "Polymer Crosslinking: a new Strategy to Enhance Mechanical Properties and Structural Stability of Bioactive Glasses." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13661.

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The organic-inorganic hybrids fabricated by the sol-gel method are intrinsically bioactive materials with extensive applications in bone tissue engineering. The brittleness and limited water uptake capacity of these monoliths, however, restrict their applications for engineering the soft tissues and their interfaces with bone. To address these challenges, we developed a unique method in which polymer crosslinking was used to cease the over-condensation of a bioactive glass component and eradicate the formation of brittle structure. In this study, an organosilane-functionalized gelatin methacry

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25

Acosta, Romero Carolina. "Essential oil components encapsulated in mesoporous silica supports: a bioactive properties evaluation and toxicological approach." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/90653.

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The present PhD thesis, entitled: "Essential oil components encapsulated in mesoporous silica supports: a bioactive properties evaluation and a toxicological approach" focuses on the study of protection and controlled release of natural bioactive agents, derived from essential oil components (EOCs), encapsulated in mesoporous silica particles (MSPs). In addition, this thesis evaluatesthe silica-based supports to reduceundesirable sensorial propertiesandfor ensuring a low-health risk. The first section of the thesis shows the effect of encapsulation of EOCs in mesoporous silica supports. This

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Yin, Hang. "Supramolecular encapsulation of bioactive molecules by a synthetic receptor :modulation of chemical and biological properties." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3952180.

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Lu, Xiaonan. "Effects of Transition Metal Oxide and Mixed-Network Formers on Structure and Properties of Borosilicate Glasses." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404587/.

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First, the effect of transition metal oxide (e.g., V2O5, Co2O3, etc.) on the physical properties (e.g., density, glass transition temperature (Tg), optical properties and mechanical properties) and chemical durability of a simplified borosilicate nuclear waste glass was investigated. Adding V2O5 in borosilicate nuclear waste glasses decreases the Tg, while increasing the fracture toughness and chemical durability, which benefit the future formulation of nuclear waste glasses. Second, structural study of ZrO2/SiO2 substitution in silicate/borosilicate glasses was systematically conducted by mol

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Lai, Benjamin Fook Lun. "Bioactive polymers : a comparative study on the antithrombotic properties of soluble polymers and surface grafted polymers." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/20871.

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Use of synthetic materials in medical applications is one of the most common practices in modern medicine. Yet occurrence of surface-induced thrombus formation on these materials, especially those associated with cardiovascular applications, generates a need for surface modifications. Limiting thrombus formation on a biomaterial surface represents the ultimate success for blood contacting devices. One interesting approach is to enhance fibrinolysis before the blood clot becomes stabilized. Herein, two synthetic polymers, poly-N- [(2, 2-dimethyl-1, 2-dioxolane) methyl] acrylamide (PDMDOMA)

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Shinzato, Shuichi. "Bioactive bone cement : evaluation of various ceramic fillers and polymer matrixes on mechanical and biological properties." Kyoto University, 2001. http://hdl.handle.net/2433/150510.

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Ravarian, Roya. "The Effect of Nano-Scale Interaction on the Physico-Chemical Properties of Polymer-Bioactive Glass Composites." Thesis, The University of Sydney, 2013. http://hdl.handle.net/2123/10147.

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Polymer-bioglass composites are favourable materials for bone repair. However, early failure in the interface of components is a common problem in physical mixtures. The aim of this project was to address the issue of phase separation by creating a hybrid material in which the polymer is bonded to bioglass. Synthetic non-biodegradable poly(methyl methacrylate) (PMMA) and natural biodegradable chitosan were selected as two types of polymers for fabrication of hybrid with bioglass. PMMA and chitosan were functionalised with appropriate silane coupling agents and covalently bonded to bioglass. Th

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Lo, Bosco Fabrizia. "Evaluation of antioxidant properties and assessment of genetic diversity of Capparis spinosa cultivated in Pantelleria Island." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/79872.

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Capparis spinosa is a wild and cultivated bush, which grows mainly in the Mediterranean Basin. Unopened flower buds, called capers are used in the Mediterranean cuisine as flavoring for meat, vegetable and other foods. Several studies evaluated bioactive component and antioxidant activity of Capparis spinosa, increasing the market demand and the economic importance of capers. The aim of this work was to evaluate the contents of bioactive compounds in floral buds fermented in salt of C. spinosa collected from different areas of Pantelleria Island (Italy), testing the effect on healthy function

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Bertolla, Luca. "Mechanical Reinforcement of Bioglass®-Based Scaffolds." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234586.

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Bioactive glasses exhibit unique characteristics as a material for bone tissue engineering. Unfortunately, their extensive application for the repair of load-bearing bone defects is still limited by low mechanical strength and fracture toughness. The main aim of this work was two-fold: the reinforcement of brittle Bioglass®-based porous scaffolds and the production of bulk Bioglass® samples exhibiting enhanced mechanical properties. For the first task, scaffolds were coated by composite coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC). The addition of PVA/MFC

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Mohanty, Shimony. "Bioactive Properties of Australian Native Fruits, Tasmannia lanceolata and Terminalia ferdinandiana: The Characterization of their Active Compounds." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/366766.

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Australian bush foods have been shown to have functional food and medicinal benefits but very few comprehensive scientific investigations have been undertaken on these plants. Two Australian fruits that have been highlighted as species warranting investigation are the berries of Tasmannia lanceolata (Tasmanian pepper berry) and Terminalia ferdinandiana (Kakadu plum). Both species have been used traditionally and are currently marketed as functional foods in addition to being exported overseas for various uses. The aim of this thesis was to investigate the antimicrobial bioactivity of

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Dimaki, Chryssa. "Effects of environmental factors on growth, bioactive compounds and cholinergic properties of hydroponically raised Salvia and Narcissus species." Thesis, University of Newcastle Upon Tyne, 2007. http://hdl.handle.net/10443/589.

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The increasing interest of the pharmaceutical and food industry in exploiting natural products has initiated scientific studies on the so-called aromatic & medicinal plants. However, information regarding their cultivation is scarce, and as bioactive phytochemicals are highly susceptible to environmental regulation, optimization and full control of growth conditions are vital for a cost-effective, standardised and high-quality medicinal product. Thus, Salvia officinalis var purpurea and Narcissus "Ice Follies" were cultivated by means of the hydroponic Nutrient Film Technique (NFT), under vari

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Kalistratova, Aleksandra. "Tuning bioactive peptides properties : new developments in the O-N acyl transfer reaction and dimerization of unprotected peptides." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT229/document.

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L’intérêt des peptides comme des médicaments potentiels est en constante augmentation. Des stratégies ont été développées pour améliorer la sélectivité, l’activité, et la stabilité des peptides vis-à-vis de la protéolyse. Dans ce mémoire de thèse, deux nouvelles modifications de peptides sont proposées.Dans le premier chapitre, nous présentons une nouvelle application de la réaction de transfert O-N acylique pour la synthèse de peptides agrafés (ou ‘stapled peptides’). L’introduction d’une ‘agrafe’ dans un peptide est un moyen de stabiliser une structure secondaire hélicoïdale en établissant u

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Myers, Meredith R. Myers. "Comparison of Consumer Acceptance, Physico-chemical Properties, and Bioactive Delivery of Blueberry Extract and Whole Blueberry Powder Confections." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531490769497695.

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Liu, Wai-ching, and 廖惠清. "Strontium incorporated materials in orthopaedics: gentamicin release in bone cement and scaffolds with highmechanical properties for tissue engineering." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47234672.

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　　　Strontium (Sr) is not only widely studied for its compound as a drug for treating osteoporosis, but there is also a growing interest of its addition in orthopaedic biomaterials. Over the years, the development of orthopaedic biomaterials has already advanced to a new era in the search of resorbable and/or bioactive materials. Due to its anabolic and anti-resportive properties of Sr on bone regeneration as a drug, strontium has been extensively investigated for its potential in other orthopaedic applications. The purposes of this study were to investigate strontium containing hydroxyapat

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Yang, Yali. "Study of effects of cooking methods on physical properties and bioactive compounds in selected potato cultivars (Solanum tuberosum L)." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/320189.

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La patata es una fuente de carbohidratos, de versátil preparación y presentación. Dependiendo del proceso de cocción y de las características morfológicas y nutricionales de la patata estos efectos pueden ser positivos o negativos, especialmente en los compuestos bioactivos. La formación de acrilamida en la fritura es otro problema sin resolver, por ello la investigación de cómo prevenir y/o reducir su contenido es un objetivo para la industria alimentaria. Sin embargo, no existen límites legales para este contaminante, especialmente en productos de patata fritos. Por otra parte, un mayor cono

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Lorenzo, Natasha Dantas. "Mesocarpo do pequi (Caryocar villosum alb. pers.): incorporação em formulação de chocolate amargo com vista a agregação de valor nutricional." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/9/9133/tde-25042017-163018/.

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As perspectivas são promissoras para a exploração de espécies não tradicionais de frutas tropicais com compostos de interesse nutricional e capacidade antioxidante. Dentre as frutas que apresentam relevantes quantidades de nutrientes, podemos destacar o pequi (Caryocar villosum Alb. Pers.). Na sua forma in natura, possui concentrações expressivas de compostos fenólicos e carotenoides totais, principalmente na polpa, sendo o óleo extraído rico em ácidos graxos. Diversos estudos sobre o cacau relacionam sua alta capacidade antioxidante com sua grande concentração de compostos fenólicos. O objeti

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Ansari, Sonia. "The Effect of Interpenetrating Network on the Physico-Chemical Properties of Polymer-Bioactive Glass Hybrid Monolith for Bone Tissue Regeneration." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/15998.

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The organic-inorganic hybrid is a favourable material for bone tissue engineering. However, the brittleness and rapid degradation of these monoliths restrict their application for engineering, soft tissues and their interfaces with bone. The aim of this project was to address the issue of brittleness and phase separation by introducing an interpenetrating network between the polymer and bioactive glass. In this study, the physicochemical properties and mechanical strength of these hybrid monoliths were tuned by incorporating a cross linking agent poly (ethylene glycol diacrylate) (PEGda). The

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Malomo, Sunday. "Structure-function properties of hemp seed proteins and protein-derived acetylcholinesterase-inhibitory peptides." Elsevier, 2014. http://hdl.handle.net/1993/30736.

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Hemp seed proteins (HSP) were investigated for physicochemical and functional properties in model food systems. In addition, the HSP were enzymatically digested and the released peptides investigated as potential therapeutic agents. Membrane isolated HSP (mHPC) were the most soluble with >60% solubility at pH 3-9 when compared to a maximum of 27% for isoelectric pH-precipitated proteins (iHPI). However, iHPI formed emulsions with smaller oil droplet sizes (<1 µm) while mHPI formed bigger oil droplets. The iHPI was subjected to enzymatic hydrolysis using different concentrations (1-4%) of six p

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Fukuda, Chisako. "Bone bonding ability and handling properties of a titania?polymethylmethacrylate (PMMA) composite bioactive bone cement modified with a unique PMMA powder." Kyoto University, 2012. http://hdl.handle.net/2433/157423.

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Purnama, Monica. "The effect of various dehydration techniques on ginsenoside recovery from North American ginseng and bioactive properties on 3T3-L1 adipose tissue cell line." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12565.

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Three dehydration techniques, applied to North American ginseng roots (NAG), were evaluated to determine the subsequent pore characteristics, recovery of the ginsenoside content, and the related bioactive properties on a cultured 3T3-L1 fat cell line. Fresh North American ginseng roots were shredded prior to air drying (AD), freeze drying (FD), and vacuum-microwave drying (VMD) processes. Total porosities and pore distribution measurements were determined using a mercury porosimeter. Among samples, FD ginseng obtained the highest total porosity followed by VMD and AD, respectively. All dehydr

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Jacobo-Herrera, Nadia Judith. "Anti-inflammatory properties and bioactive natural products from Witheringia solanacea, Withania frutescens (Solanaceae) and Valeriana officinalis (Valerianaceae) using NF-kappa as a molecular target." Thesis, University College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420313.

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Khalaf, Eyada. "Phenolic-Linked Antioxidant and Anti-Hyperglycemic Properties of Selected Cereal, Pseudo-Cereal, and Millet Using In Vitro Screening Methods." Thesis, North Dakota State University, 2018. https://hdl.handle.net/10365/29281.

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Improving diversity of food systems by targeting whole grain cereals, pseudo-cereals, and millets is essential to enhance nutritional qualities beyond macro and micronutrient balance and to address emerging global food and nutritional security-linked public health challenges. However, human health relevant nutritional parameters of whole grains vary widely among species, genotypes, growing conditions, and further due to different processing methods. Therefore, it is important to screen human health relevant nutritional parameters of these whole grains prior to targeting them for wider public h

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Bekhit, Mariam. "Encapsulation de la souche Lactococcus lactis, productrice de nisine, pour le développement d’emballages actifs." Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0219/document.

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La nisine est un peptide antimicrobien produit par la souche de Lactococus lactis subsp. lactis, autorisée pour des applications alimentaires par le comité d'experts sur les additifs alimentaires et les aliments de l'Organisation des Nations Unies pour l’Alimentation et l'Agriculture et de l’Organisation Mondiale de la Santé (FAO / OMS). La nisine peut être appliquée, par exemple, pour la conservation des aliments, la biopréservation, le contrôle de la flore de fermentation, et potentiellement comme agent antimicrobien clinique. Le piégeage de bactéries capables de produire de la nisine dans d

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Pföss, Barbara Sophie Verfasser], Reinhard [Akademischer Betreuer] Conradt, Aldo R. [Akademischer Betreuer] Boccaccini, and Christian Hans-Georg [Akademischer Betreuer] [Roos. "Essential material properties of bioactive silicate glasses and the implementation of topographical features / Barbara Sophie Pföss ; Reinhard Conradt, Aldo R. Boccaccini, Christian Hans-Georg Roos." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1195237340/34.

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Pföss, Barbara Sophie [Verfasser], Reinhard Akademischer Betreuer] Conradt, Aldo R. [Akademischer Betreuer] Boccaccini, and Christian Hans-Georg [Akademischer Betreuer] [Roos. "Essential material properties of bioactive silicate glasses and the implementation of topographical features / Barbara Sophie Pföss ; Reinhard Conradt, Aldo R. Boccaccini, Christian Hans-Georg Roos." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1195237340/34.

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Leite, Juliana Aparecida dos Santos. "Impacto do processo térmico assistido por micro-ondas sobre a funcionalidade do leite humano." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-11042018-075007/.

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Neste trabalho, foram determinadas as propriedades dielétricas e a condutividade elétrica de quatro tipos leite (leite humano e 3 tipos de leite vaca - cru, integral e semi-desnatado) e de três fórmulas infantis (FIs) empregando a técnica de cabo coaxial de ponta aberta. As medições das propriedades dielétricas foram realizadas na faixa de frequência de (500 a 3000) MHz e em temperaturas de (5 a 90) ºC. O comportamento dielétrico de todos os tipos de leite e das FIs foi caracterizado por dois mecanismos principais (condução iônica e rotação dipolar), que se mostraram dependentes da frequência

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Muhizi, Théoneste. "Synthèse d’aminosucres conduisant à des biocides d’origine naturelle." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13641/document.

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Au cours de ce travail, différents glucosylamines et aminodésoxyglucoses ont été synthétisés et caractérisés par différentes méthodes spectroscopiques dont l’IRTF, la RMN 1H, 13C et MALDI-Tof MS. L’étude des propriétés biologiques de ces molécules réalisée, d’une part, avec deux champignons du bois, Coriolus versicolor et Poria placenta, et d’autre part, avec trois microorganismes potentiellement rencontrés dans des aliments, Listeria innocua, Salmonella typhimurium et Fusarium proliferatum ont indiqué une contribution positive de la N-alkylation, du degré de N-substitution et de la quaternisa

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