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Dynamique des élevages pastoraux et agropastoraux en Afrique intertropicale

Authors: --- --- --- --- et al.
ISBN: 9782759228959 Year: Pages: 268 DOI: 10.35690/978-2-7592-2895-9 Language: French
Publisher: éditions Quae
Added to DOAB on : 2019-11-10 11:21:07
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Abstract

De 1974 à 2014, l’Afrique intertropicale a connu une croissance inédite des effectifs des herbivores domestiques. Les effectifs bovins ont été multipliés par plus de 2, ceux des petits ruminants par plus de 3. Aujourd’hui, la région regroupe environ 20 % des bovins et des ovins, 33 % des caprins et 81 % des dromadaires élevés sur la planète. Soit un cheptel de près de 900 millions de têtes. L’ouvrage est axé sur la dynamique des élevages des ruminants et des équidés en Afrique intertropicale. Il décrit les différents systèmes d’élevage rencontrés en zones aride et subhumide et les ressources alimentaires disponibles ; il aborde les impacts locaux et globaux des élevages des herbivores sur l’environnement. Le rôle socio-économique majeur des activités autour des animaux et de leurs produits, et la demande croissante en viande et lait des consommateurs sont soulignés. Une organisation efficace des filières bétail-viande est rapportée, alors que des contraintes à la mise en place d’une industrie laitière persistent. Pour de nombreuses familles vivant proches du seuil de pauvreté, l’élevage est un facteur de réduction de la vulnérabilité. Divers services qui permettraient un développement durable des élevages sont décrits. Cependant, les modes de financements et les suivis des impacts socio-économiques et environnementaux devront évoluer.

Lignans

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ISBN: 9783038979081 / 9783038979098 Year: Pages: 384 DOI: 10.3390/books978-3-03897-909-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Chemistry (General) --- Organic Chemistry
Added to DOAB on : 2019-06-26 10:09:00
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Abstract

Lignans are a class of natural products found mainly in plants. They have a wide variety of structures and exhibit a range of potent biological activities. Lignans are also well-known components of a number of widely eaten foods and are frequently studied for their dietary impact. Owing to these factors, lignans have been extensively studied by scientists from a large number of disciplines. This collection of research and review articles describes topics ranging in scope from the recent isolation and structural elucidation of new lignans, strategies towards the chemical synthesis of lignans, assessment of their biological activities and potential for further therapeutic development. Research showing the impact of lignans in the food and agricultural industries is also presented.

Keywords

lignans --- chemometrics --- neolignans --- flavonolignans --- chemical space --- drug-like --- Lespedeza cuneata --- lignan glycoside --- flavonoid glycoside --- cytotoxicity --- adipocyte and osteoblast differentiation --- Bursera --- Burseraceae --- lignans --- lignan --- molecular dynamics --- intermolecular interactions --- graph theory --- lignans --- heilaohu --- tujia ethnomedicine --- chemical characterization --- cytotoxicity --- antioxidant --- cultivar --- environment --- flax --- flavonol --- genetic --- hydroxycinnamic acid --- lignan --- seed --- aryldihydronaphthalene lignan --- arylnaphthalene lignan --- oxidation --- synthesis --- lignans --- dibenzyl butyrolactones --- anti-proliferative --- acyl-Claisen --- stereoselective synthesis --- Schisandra rubriflora --- Schisandra chinensis --- red-flowered Chinese magnolia vine --- Chinese magnolia vine --- lignans --- phytochemical analysis --- UHPLC-MS/MS --- anti-inflammatory activity --- LOX --- COX --- sPLA2 --- lignans --- neolignans --- Lauraceae --- chemical components --- chemical structures --- dietary lignans --- national databases --- food groups --- dietary intake --- harmonized databases --- lignans --- in silico studies --- podophyllotoxin --- antibacterial activity --- acetylcholinesterase inhibitors --- antioxidant activity --- cytotoxicity --- natural products --- total synthesis --- lignan --- Bursera fagaroides --- podophyllotoxin-type lignans --- cell cycle --- cell migration --- epiboly --- microtubules --- F-actin --- cancer --- lignans --- animal health --- cattle --- enterolignan --- human health --- pharmacokinetic --- ruminant --- secoisolariciresinol diglucoside --- Lignan --- bitterness --- taste-active compound --- quantification --- oak ageing --- lignans --- norlignans --- 9-norlignans --- semisynthesis --- hydroxymatairesinol --- bioactivity --- lignans --- oxidation --- lignans --- diet --- antioxidants --- health promotion --- chronic diseases --- Schisandrae Chinensis Fructus --- wild --- cultivated --- multiple bioactive components --- simultaneous quantitation

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