(n.) An orange-red crystalline substance, C15H10O5, obtained from the buckthorn, rhubarb, etc., and regarded as a derivative of anthraquinone; -- so called from a species of rhubarb (Rheum emodei).
Example Sentences:
(1) From lettuce and string beans quercetin was isolated (after chemical hydrolysis) and in rhubarb emodin, an anthraquinon, was detected.
(2) Isolation of emodin in small amounts supports previous evidence that it is an intermediate in secalonic acid biosynthesis.
(3) The mechanism of action of aloe-emodin-9-anthrone, a decomposition product of barbaloin, in causing a significant increase in the water content of the rat large intestine, was investigated.
(4) The bacterium grew in PYF broth containing barbaloin and converted barbaloin to aloe-emodin anthrone.
(5) The anthraquinones danthron, doxorubicin and emodin were poorly metabolized in this system.
(6) Ca(2+)-calmodulin-dependent myosin light chain kinase (MLCK) is inhibited by a range of di-, tri- and tetrahydroxylated anthraquinones (IC50 values 2 to 53 microM), the most potent inhibitors being the more polar compounds, namely mitoxantrone (IC50 2 microM) and emodin (1,3,8-trihydroxy-6-methylanthraquinone) (IC50 8 microM).
(7) At 2.3 h after oral administration of sennoside C, nearly equimolar amounts of aloe-emodin anthrone and rhein anthrone were detected in the large intestine of mice.
(8) These two effects on energy transduction in cytoplasmic membranes explain the antibiotic properties of emodin and emodinanthrone.
(9) In the presence of emodin (10(-6) to 3 x 10(-5) M), the proliferative response was reduced in a dose-dependent manner.
(10) Chrysophanol, islandicin, iridoskyrin, and emodin were inactive as mutagens or as antibacterial agents.
(11) The potential role of highly oxygenated metabolites in mycotoxicosis was emphasized by the establishment of secalonic acids A and D. emodin, moniliformin, altenuisiol alternariol and austdiol as toxins.
(12) Several biologically active substances, such as aloenin (1), magnesium lactate, aloe-emodin (4), barbaloin (5), and succinic acid, were found to be contained in the leaf juice of Aloe arborescens Mill.
(13) Chrysophanic acid, aloe-emodin, and sennosides A and B did not possess activity against any of the viruses tested.
(14) The results showed that aloe emodin inactivated all of the viruses tested except adenovirus and rhinovirus.
(15) The crude extracts and emodin induced a dose-dependent decrease in the mutagenicity of benzo[a]pyrene (B[a]P), 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) and 3-amino-1-methyl-5H-pyrido[4,3-b]indole (Trp-P-2).
(16) Emodin dose dependently relaxed isolated vascular rings of human internal mammary artery and saphenous vein, rabbit thoracic aorta, abdominal aorta and mesenteric artery, and rat thoracic aorta.
(17) Emodin and scoparone, the active principles isolated from Polygonum multiflorum and Artemisia scoparia, respectively, both exhibit vasorelaxant and immunosuppressive effects.
(18) It is concluded that the mutagenicity of emodin is due to a chemically stable, oxidized metabolite forming physico-chemical associations with DNA, possibly of the intercalative type.
(19) Also, nojirimycin bisulfite completely inhibited the transformation of barbaloin to aloe-emodin anthrone.
(20) Among several hydroxylated metabolites of emodin, a fungal anthraquinone and constituent of rhubarb, 2-hydroxyemodin was a direct-acting mutagen showing a large electron-spin resonance (ESR) signal in the presence of DNA, especially at alkaline pH.
Rhubarb
Definition:
(n.) The name of several large perennial herbs of the genus Rheum and order Polygonaceae.
(n.) The large and fleshy leafstalks of Rheum Rhaponticum and other species of the same genus. They are pleasantly acid, and are used in cookery. Called also pieplant.
(n.) The root of several species of Rheum, used much as a cathartic medicine.
Example Sentences:
(1) When it's serving time, use a good serrated knife to saw cleanly through the rhubarb.
(2) From lettuce and string beans quercetin was isolated (after chemical hydrolysis) and in rhubarb emodin, an anthraquinon, was detected.
(3) Proanthocyanidins (dimers and oligomers of polyhydroxy-flavan-3-ols) were only found in the testa of broad beans, beans, and peas with coloured flowers, and in rhubarb stalks.
(4) Jane's favourite combos are: rhubarb and strawberry, rhubarb and raspberry, and plum and blackberry.
(5) The results suggested that: (1) the virus may be one of pathogenetic factor of the hemorrhagic pancreatitis; (2) the rhubarb was effective in the treatment of hemorrhagic pancreatitis under our experimental conditions.
(6) An earlier version of the rhubarb self-saucing pudding failed to add the milk in the listed ingredients and how and when to do it.
(7) As soon as it has melted, add the rhubarb and cook over a low heat until just tender.
(8) The fryingpan should be large enough to hold the pork and rhubarb fairly snugly.
(9) The custard base and rhubarb can cook at the same time.
(10) The first group included beef and fish broths, boiled meat, rye bread, cabbage, tomato, apple, cherry and black currant juices, rhubarb infusion, fresh kefir, carrot and pumpkin purees.
(11) Recipe supplied by Bronte Aurell, Scandi Kitchen, scandikitchen.co.uk Vanilla-fried rhubarb on sugar brioche Almost like jam on toast, the rich sugary brioche is a good backdrop to the sharp rhubarb.
(13) 9 Spread the meringue over the rhubarb, using the back of a spoon to create some peaks and swirls and place in the hot oven for 15-20 minutes or until the meringue topping is golden brown.
(14) Burr, 38, who also holds a first-class degree in biodiversity and conservation from London’s Birkbeck College, has been heralded as the favourite to win not least because he has been named star baker a record five times, particularly impressing Mary Berry and Paul Hollywood in doughnut week with his rhubarb and custard zeppole.
(15) In the main study the foods were either (a) divided into the calculated bite-size normal portions or (b) the portions were mashed (rhubarb pie), untreated (rice) or finely ground (raw carrot).
(16) The above description indicate that Rhubarb could promote immune response.
(17) One guest said the food – smoked rainbow trout, pan-fried guinea fowl, rhubarb and elderflower tart – wasn't memorable.
(18) Among several hydroxylated metabolites of emodin, a fungal anthraquinone and constituent of rhubarb, 2-hydroxyemodin was a direct-acting mutagen showing a large electron-spin resonance (ESR) signal in the presence of DNA, especially at alkaline pH.
(19) 4 Spread the rhubarb into the base of the prepared dish and spoon the batter on top.
(20) Once it has started to colour, divide between four plates, then top with the rhubarb and butter.