12/21/2023 0 Comments Symphytum plantIt may be full of minerals but it is not pleasant eating for most tastes. The leaf is hairy and the texture is mucilaginous. Habitat of the herb: Damp, often shady localities, in meadows, woods etc, especially near streams and rivers.Įdible parts of Comfrey: Young leaves - cooked or raw. This has a very limited range of application, but is of great benefit in the treatment of broken bones and eye injuries. A homeopathic remedy is made from the fresh root, harvested before the plant flowers. The leaves are harvested in early summer before the plant flowers, the roots are harvested in the autumn. External applications and internally taken teas or tinctures of the leaves are considered to be completely safe, but internal applications of tablets or capsules are felt to have too many drawbacks for safe usage. Some caution is advised, however, especially in the internal use of the herb. The root and leaves are anodyne, astringent (mild), demulcent, emollient, expectorant, haemostatic, refrigerant, vulnerary. This substance is now synthesized in the pharmaceutical industry and used in healing creams. The plant contains a substance called "allantoin", a cell proliferant that speeds up the healing process. Comfrey is especially useful in the external treatment of cuts, bruises, sprains, sores, eczema, varicose veins, broken bones etc, internally it is used in the treatment of a wide range of pulmonary complaints, internal bleeding etc. The root and the leaves are used, the root being more active, and they can be taken internally or used externally as a poultice. Ces rendements, bien que faibles, sont significatifs, car ils permettent de faire pour la première fois la démonstration qu’un extrait méthanolique peut favoriser la catalyse aux chlorures métalliques dans des liquides ioniques en vue de produire le 5-hydroxyméthylfurfural à partir de biomasse.Medicinal use of Comfrey: Comfrey is a commonly used herbal medicine with a long and proven history in the treatment of various complaints. Le rendement en 5-hydroxyméthylfurfural de moins de 1 %, obtenu à partir de biomasse non traitée, a été amélioré à 6,04 % et 18,0 % en utilisant des extraits méthanoliques secs de consoude et panic érigé, respectivement. L’extraction au méthanol a produit des extraits riches en sucres simples dont les concentrations étaient de 300 ± 60 mg de sucres par g d’extrait sec de consoude et de 202 ± 16 mg de sucres par g d’extrait sec de panic érigé. L’hydrolyse dans le H 2SO 4 à 0,5 mol/L en conditions d’autoclave a produit des extraits riches en sucres contenant 230 ± 23 mg de sucres par gramme de biomasse hydrolysée, dans le cas de la consoude, et 425 ± 13 mg de sucres par g de biomasse hydrolysée, dans le cas du panic érigé. De plus, deux prétraitements, soit le traitement à l’acide sulfurique dilué et l’extraction au méthanol, ont été étudiés comme moyens pour améliorer la disponibilité des sucres et augmenter les rendements en 5-hydroxyméthylfurfural par rapport à la biomasse non traitée. (panic érigé), de produire le 5-hydroxyméthylfurfural par catalyse aux chlorures métalliques dans deux liquides ioniques : le chlorure de 1-butyl-3-méthylimidazolium ou le chlorure de 1-éthyl-3-méthylimidazolium. (consoude commune) et Panicum virgatum L. Résuméĭans le cadre des présents travaux, nous avons évalué les perspectives pour deux plantes poussant au Canada, Symphytum officinale L. These yields, although small, are important, as they show for the first time that a methanol extract could enhance the metal chloride catalysis in ionic liquids for 5-hydroxymethylfurfural production from biomass. The yield of 5-hydroxymethylfurfural was improved from less than 1% using untreated biomass to 6.04% and 18.0% using dry methanol extracts of comfrey and switchgrass, respectively. The methanol extraction produced extracts high in simple sugars with concentration of 300 ± 60 mg of sugars per gram of dry extract for comfrey and 202 ± 16 mg of sugars per gram of dry extract for switchgrass. The 0.5 mol/L H 2SO 4 hydrolysis under autoclave conditions produced sugar-rich extracts containing 230 ± 23 mg of sugars per gram of hydrolysed biomass for comfrey and 425 ± 13 mg of sugars per gram of hydrolysed biomass for switchgrass. Furthermore, two pre-treatments, namely the dilute sulfuric acid treatment and the methanol extraction, were studied as a way to improve sugar availability and increase 5-hydroxymethylfurfural yields compared with untreated biomass. (switchgrass), to produce 5-hydroxymethylfurfural using metal chloride catalysis in two ionic liquids, 1-butyl-3-methylimidazolium chloride or 1-ethyl-3-methylimidazolium chloride. The present work examined the potential for two plants grown on Canadian soil, Symphytum officinale L.
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