Nutritional and antioxidant properties of fresh and processed tomato (Lycopersicon esculentum) cultivars from Cuba and Germany PDF Download
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Author: Annia Gonzalez Rivero
Publisher: Cuvillier Verlag
ISBN: 373692142X
Category : Science
Languages : en
Pages : 144
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Author: Annia Gonzalez Rivero
Publisher: Cuvillier Verlag
ISBN: 373692142X
Category : Science
Languages : en
Pages : 144
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Book Description
Author: V R Preedy
Publisher: CRC Press
ISBN: 1439843392
Category : Medical
Languages : en
Pages : 673
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Book Description
The contributors to this book are authors of international and national standing, leaders in the field and trendsetters. The book covers emerging fields of science and important discoveries relating to tomatoes and related products. This represents a one-stop shopping of material related to tomatoes. This book will be essential reading for plant sc
Author: A. Venketeshwer Rao
Publisher: CRC Press
ISBN: 1351110853
Category : Health & Fitness
Languages : en
Pages : 230
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Book Description
Lycopene is a potent antioxidant carotenoid found in fruits and vegetables; particularly high amounts exist in red tomatoes. It is not an essential nutrient for humans, but can be a potential therapeutic agent for preventing several human diseases. Since the publication of the previous book on lycopene, extensive advances have been made with respect to the role of lycopene and tomatoes in human health. Whereas the initial focus of research was on cancer, Lycopene and Tomatoes in Human Nutrition and Health represents the next major step in documenting advances in understanding the chemistry, bioavailability, metabolism; mechanisms of action of lycopene; and its role in preventing human diseases other than cancer as discussed in the various chapters of the book. The book includes chapters that discuss genetic polymorphisms; and lycopene’s relationship to cardiovascular diseases, cardiometabolic diseases, bone health, and other health disorders including male infertility, skin diseases, respiratory disorders and neurodegenerative diseases. The book includes information addressing regulatory aspects of natural health products and, in particular lycopene, presenting industrial insights. The contents of the book are selected carefully to provide the readers with the most current information available on lycopene and tomato bioactives.
Author: David Yeung
Publisher: ARPR
ISBN: 9780977383900
Category : Health & Fitness
Languages : en
Pages : 108
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Book Description
The authors discuss the health benefits of lycopene, which is found in tomatoes, and how to incorporate into the diet.
Author: Susana De Jesús
Publisher:
ISBN:
Category : Carotenoids
Languages : en
Pages : 244
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Book Description
Abstract: Carotenoids and other plant-associated pigments represent a rich source of dietary nutrients and other potentially bioactive compounds. A correlation between the intake of carotenoids and the reduction of cancer and heart disease has been noted. The antioxidant effects of lycopene suggest a possible mechanism of activity but a causal relationship remains to be demonstrated. Epidemiological evidence that suggests a role for lycopene in reducing risk of disease has generated interest in this carotenoid as a food with function that includes health promoting properties as well as dietary needs. There are limitations in the use of carotenoids as so called functional foods because the effect of their structure and concentration on uptake and biological activity in the human body is not understood. The objectives of this study were to: 1) Develop tomato lines with enhanced concentration and altered structure of carotenoids and determine the importance of isomeric structure of lycopene on cyclization reactions in carotenoid biosynthesis; 2) Apply HPLC metabolic profiling to evaluate the secondary metabolites of the tomatoes developed under objective 1; 3) Study the phytochemistry of "purple heirloom" tomatoes as a potential source of increased dietary pigments. We used molecular-marker-assisted and classical selection to combine genes that affect both the biochemical synthesis of carotenoids and the density of the chromoplast to develop tomato lines varying in carotenoid concentration and structure. To test the effect of genetic background on carotenoid profile, tomatoes segregating for tangerine (t) and ripening inhibitor (rin) genes were crossed to a tomato line carrying the tangerine virescent (t(v)) allele. Populations were developed by crossing the heirloom varieties to processing tomato breeding lines, followed by self fertilization to develop segregating populations for selections. Two hypotheses, increased poly-phenols and retention of chlorophyll, were tested regarding the basis of pigmentation in these varieties described as "black" and "purple" were tested. We developed tomato lines with improved and altered concentration of carotenoids. Selected lines ranged in concentration from 0-132 ug/gm lycopene, 0-52 ug/gm [beta] -carotene, 0-45 ug/gm [delta]-carotene, 0-52 ug/gm tetra-cis lycopene, and 0-62 ug/gm [zeta]-carotene on a fresh weight basis. When dark green (dg) was combined with t and t(v) the concentration of carotenoid precursors was also altered. Combination of the gene Delta with t and t(v) suggest that lycopene [epsilon]-cyclase does not efficiently use tetra-cis lycopene as a substrate and to convert it to [delta]-carotene. These results emphasize the important role of genetic interactions on the concentration and structure of carotenoids in tomato fruit. The presence of the rin mutation had a very significant effect on the carotenoid profile. When rin was present in the homozygous condition, the concentration of tetra-cis lycopene decreased by 91%. There was a 45% decrease in tetra-cis lycopene when rin was in the heterozygous condition, demonstrating that hybrids employing the rin locus to impart long shelf life may have a lower level of certain carotenoids. However, an increase in [beta]-carotene was observed when rin was present in both the homozygous and heterozygous condition in the tangerine background, with the homozygous rin lines having significantly more [beta]-carotene than the heterozygous. No [zeta]-carotene and neurosporene were detected when rin was present in the homozygous condition, and these compounds decreased 42% and 49%, respectively, relative to wild type plants when rin was in the heterozygous condition. When rin was in the homozygous and heterozygous condition, phytoene decreased 88% and 51%, respectively, relative to wild type plants. The allele present at the tangerine locus did not have a significant effect on the profile of carotenoid precursors, but the concentration of tetra-cis lycopene and [beta]carotene did vary, with lines carrying the t(v) allele containing more [beta]-carotene and lines carrying the t(v) allele containing more tetra-cis lycopene. Segregating populations developed by crossing purple heirloom varieties to processing tomato breeding lines segregated for a range of pigment types and colors. HPLC traces showed that populations ranged in lycopene concentration from 11-108 ug/g, [beta]-carotene from 3-7 ug/g, and tetra-cis lycopene concentration from 6-237 ug/g on a fresh weight basis. An assay of total phenolics demonstrated that 'Black Plumb' had significantly higher amounts of poly-phenol compounds compared to the other parents used to develop this population. Varieties 'Black' and 'Black Prince' did not differ in poly-phenol content from breeding lines Ohio 02-1023-1 and Ohio 02-1025-1. The heirloom varieties tested maintained chlorophyll after ripening. Allelism test-crosses between purple heirloom varieties and genetic stocks carrying the green flesh (gf) gene resulted in hybrids having the purple phenotype. These results suggest that the gf mutation is responsible for the purple phenotype, and that the purple color in the heirloom varieties we studied is due to the retention of chlorophyll as the plastid accumulates lycopene. The germplasm developed will be of further use in research to address questions concerning the bioavailability and bioactivity of phytonutrients using in vitro and in vivo models.
Author: Carl Martin Jones
Publisher:
ISBN:
Category :
Languages : en
Pages : 294
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Author: Die deutsche Nationalbibliothek
Publisher:
ISBN:
Category :
Languages : de
Pages : 942
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Book Description
Author: G. Kalloo
Publisher:
ISBN: 9788170230915
Category : Tomatoes
Languages : en
Pages : 470
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Book Description
Author: Charlotte Moxley Allen
Publisher:
ISBN:
Category :
Languages : en
Pages : 502
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Book Description
Author: R. Linssen
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Book Description
