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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"malic acid"”.
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Survival of Listeria monocytogenes on Blueberries (Vaccinium corymbosum) and Shelf Life Determination under Controlled Atmosphere Storage
… growth and survival of L. monocytogenes in media acidified with malic acid, lactic acid or blueberry extract. The growth of L. monocytogenes and shelf life extension of fresh blueberries were evaluated after storage at 4 deg C or 12 deg C under different controlled atmosphere conditions, including …
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Virginia-grown Cider: How do Cultivar and Fermentation Strategies affect Cider Chemistry, Flavor and Consumer Valuation?
… for alcohol content, free/total SO2, titratable acidity, volatile acidity, malic acid, pH, and residual sugar. Sensory evaluation was conducted using Descriptive Analysis with trained panelists. Results were analyzed via ANOVA and Principal Component Analysis. Apple cultivar and fermentation …
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Developing green processes for the conversion of biobased materials into pyrones
… plasticizers, and block copolymers. Triacetic Acid Lactone (TAL) is a bio-based molecule fermented from Saccharmyces cerevisiae. In the first chapter, we discuss the conversion of triacetic acid lactone to corrosion inhibitors. The synthesis utilizes a nucleophilic heterocycle undergoing …
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A comparison study of efficacy of food sanitizers with fresh leafy vegetables with different surface properties and analysis of the rotavirus replication cycle after inactivation by food sanitizers
… of two kinds of food sanitizers Tsunami® 100 and malic acid + TDS on rotaviruses attached onto three cultivars’ surfaces with different surface properties. Moreover, we investigated the inhibitory effects of the sanitizers on the rotavirus replication cycle at a molecular level. As a result, while …
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Investigating sensory characteristics and flavor profiles of ten cucumber cultivars using descriptive and sensory instrumental analysis
… peel. Sugars (glucose, fructose, sucrose) and acids (citric acid, fumaric acid, malic acid) in the flesh and peel were quantified using HPLC. Amino acids were quantified with GC-MS for 26 amino acids and HPLC for citrulline and arginine. Key sensory attributes for cucumber included fresh, …
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Directing the Assembly of Multicomponent Organic Crystals. Synthesis, characterisation and structural analysis of multicomponent organic systems formed from dynamic processes.
… of nicotinamide with both the racemic mixture of malic acid against that with an enantiomerically pure form of the acid (L-malic acid). As well as DL-phenyllactic acid and L-phenyllactic acid. iii It is apparent that recognition between enantiomeric molecular forms play a significant role in the …
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Management Strategies for Natural Cider Fermentation: Effects of sulfite addition and acidification in high- and low- tannin cultivars
… to both the high- and the low- tannin cultivars: acidification only, sulfites only, acidification and sulfites, and a control with no pre-fermentation juice chemistry adjustment. The eight experimental ciders were fermented using the Pied de Cuve (PDC) method for natural fermentation. Cider …
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Viticultural techniques of canopy management to mitigate the effects of global warming
… was increased. SST helped to improve organic acid composition by increasing the tartaric acid and reducing the malic acid. The experiment on MP demonstrated clearer results in the size of the berry: the significantly smaller berries contributed to the darker color of MP juice, but the ability …
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Electrostatic Atomization Of Antimicrobial Treatments On Ground Beef Processing, Instrumental Color, Sensory Color, Taste and Aroma Characteristics
… Antimicrobial treatments included: fumaric acid, malic acid, octanoic acid, decanoic acid, sodium propionate, propionic acid solution, potassium lactate/diacetate blend, sodium benzoate, hexanoic acid, pyruvic acid, levulinic acid, lactic acid/ citric acid blend, sodium diacetate, lemon …
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Inactivation of Escherichia coli O157:H7 on raw vegetable sprouts
… broccoli and alfalfa seeds. A combination of 10% malic acid and 1% TDS (a surfactant) seemed to be as or more effective than 20,000 ppm chlorine in inactivating E. coli O157:H7 on alfalfa, broccoli, and radish seeds. In general, there was a negative correlation between seed surface roughness and …
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Group IV element-based luminescent nanoparticles: synthesis, environmental impact evaluation and bio-imaging applications
… influences the optical properties of citric acid-based CDs. Chapter 3 represents how photoblinking malic acid-based CDs are applied for super-resolution bio-imaging experiments and how as-made CDs are separated into different colored fractions efficiently. Chapter 4 and 5 assess how the …
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Epitaxial electrodeposition of metal oxide films and superlattices which exhibit resistance switching
… of CuO from copper(II) complexes of malic acid on Cu single crystals. X-ray pole figures in conjunction with stereographic projections are used to determine the absolute configuration of the films. X-ray crystal structures of copper(II) malate crystals are analyzed to understand the …
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Investigation of the mechanism of action of pep carboxylase
… carboxylase (orthophosphate: oxaloacetic acid carboxylyase, E.C.4.1.2.31) was isolated from 4-day germinated peanut cotyledons and purified about 2400-fold. A large-scale purification procedure has been developed in order to obtain large quantities of the highly-purified enzyme. Two assay …
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The Effect of Lipid/Hydrocolloid Coatings on the Postharvest Storage Quality of 'Golden Delicious' Apples
… also significantly (P<0.0083) maintained the malic acid level in the apple. There were no significant differences (P>0.0083) among the groups with regard to soluble solids and fresh weight loss. Externally, the treated apples had a significantly greener hue (Hunter color "a") than the control …
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Approaching the Complexity of Biological Specimen: New Mass Spectrometry Concepts in Ambient Ionization and Proteomics
… identifying important compounds such as malic acid, citric acid, and quinic acid. Depth profiling is performed by constructing an automated syringe pump system, where the sharpened-LMJ-SSP can be inserted into a lime at a constant speed, while monitoring the change in product ion at m/z …
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The impact of plant root biomass on the biodegradation and bioaccessibility of hydrocarbons in soil
… to be affected by root biomass or organic acids typically found within root exudates, the use of high concentrations of citric and malic acid were observed to promote lager desorbable fractions of the hydrocarbon. This thesis contributes evidence supporting the role of root decay, turnover …
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A study of alkylation reactions α- to nitrogen for application in alkaloid synthesis
… constructed in a high-yielding sequence from (S)-malic acid. The radical cyclisation occurred with good diastereoselectivity, to afford of the four possible diastereomers, a major product(~ 50%) with the hydrogens of the two new stereocentres in a cis relationship. Similarly the carbanionic …
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Role of Flagellar Motility in Apple Blossom Invasion and Tactic Response to Various Plant Nectar Extracts by Erwinia Amylovora
… anion and cation exchange resins and the organic acid fraction was silylated and chromatographed on 3% SE-52 column. The organic acids attracting E. amylovora in nectar extracts appear to be either fumaric or malic acid or a mixture of both. Concentrations of either acid varied in different nectar …
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Development of cell-laden hydrogels with high mechanical strength for tissue engineering applications
… (PGMma), from two natural monomers glucose and malic acid. The PGMma hydrogels were cell-adhesive, and mechanically tunable by altering the formulation. In the second work, double-network (DN) hydrogels were prepared from two biomacromolecules, gellan gum and gelatin. The DN hydrogels prepared …
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Self-assembled thin films with tunable release kinetics for biomedical applications
… hydrolytically-degradable polyanion, poly(P-L-malic acid) (PMLA), for use in LbL films to control the rate of film erosion and hence protein elution which was tuned from minutes to weeks depending on the film's architecture. We further adapted the film architecture with subtle chemical …
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