Allium cepa

Macklon, A.E.S. (1975). Cortical cell fluxes and transport to the stele in excised root segments of Allium cepa L. I. Potassium, sodium and chloride. Planta, 122, 109-30. 

Terahara, N., Yamagnchi, M.-A., and Honda, T., Malonylated anthocyanins from bulbs of red onion. Allium cepa L., Biosci. Biotechnol. Biochem., 58, 1324, 1994. 

Fossen, T. and Andersen, 0.M., Anthocyanins from red onion. Allium cepa, with novel aglycone. Phytochemistry, 62, 1217, 2003. 

Allium cepa) [5], kiwi frait Actinidia deliciosa) [6], Bupleurum falcatum roots [7] and Arabidopsis thaliana [8]. 

S. E. Smith, B. L. St John, F. A. Smith, and D. j. D. Nicholas, Activity of glutamine synthetase and glutamate dehydrogenase in Trifolium subterraneum and Allium cepa L., effects of mycorrhizal infection and phosphorus nutrition. New Phytologist 99 211 (1985). 

Sengun, M.Y. and Karapinar, M. (2005a) Effectiveness of household natural sanitizers in the elimination of Salmonella Typhimurium on rocket (Eruca sativa Miller) and spring onion Allium cepa L.) . International Journal of Food Microbiology, 98, 319-323. 

Silk dyed with Reseda luteola, Sophora japonica and Allium cepa Rutin, quercetin, kaempferol, kaempferol 3,7 diglucoside, quercetin 4 glucoside, luteolin HCI/Me0H/H20, HCOOH/MeOH, H2EDTA/ACN/MeOH A H20 B ACN C H20 with HCOOH 350, 450, 490 nm/ ESI( ) Column C4 6... 

Only four plant species, i.e., Vicia faba, Allium cepa, Pisum sativum and Triticum turgidum, responded adequately to the Feulgen procedure, and were considered for use in the successive experiments. These species, together with the corresponding mutagenic compounds used and the mutagenicity tests adopted (see below in Sect. 2.4.) are listed in Table 4. 

Plants of the genus Allium, e.g. garlic Allium sativum), leek Allium amp-eloprasum), and onion Allium cepa), produce a bewildering variety of sulfur compounds. Selenium analogs for some of these have also been found (Section 11.1.3.6). Much work has focused on garlic (contains more than 100 such materials) and onion.56,66,67 Key compounds for formation of the Allium sulfur-containing secondary metabolites are sulfoxides of cysteine derivatives,... 

Yellow and red onions (Allium cepa) were reported to be poor antioxidants toward oxidation of methyl linoleate (Kahkonen and others 1999) in contrast to their high antioxidant activity toward oxidation of LDL (Vinson and others 1998). Garlic (Allium sativum L) was reported to have four times more antioxidant activity than onions when using the ORAC assay (Cao and others 1996). 

Makris DP and Rossiter JT. 2001. Domestic processing of onion bulbs (Allium cepa) and asparagus spears (Asparagus officinalis) effect on flavonol content and antioxidant status. J Agric Food Chem 49(7) 3216-3222. 

Currier HB, Strugger S. Aniline blue and fluorescence microscopy of callose in bulb scales of Allium cepa L. Protoplasma 1956 4 552-559. 

Duranti A, Cuocolo L (1988) Solarization in weed control for onion (Allium cepa L). Adv Hort Sci 2 104-108... 

The effect of applied plant residues can be positively influenced by an increase of temperature. Mallek et al. (2007) established that dried and milled crop residues of onion (Allium cepa L.) or garlic (A. sativum L.) were able to reduce seed germination of barnyard grass (E. crus-galli (L.) R Beauv.), common purslane (Portulaca oleracea L.), london rocket (Sisymbrium irio L.) during their decomposition in soil, but only at the elevated (39°C) soil temperature. It can support combination of methods for weed control, in this case allelopathy with soil heating treatments (e.g., solarization). 

The separation and identification of two novel anthocyanins from red onion, Allium cepa, have also been reported. Scales of 2.37 kg red onion were cut and extracted twice with methanol containing 0.5 per cent TFA. The extract was filtered, extracted with ethyl acetate and the aqueous phase was further purified in an ion-exchange and an SEC column. SEC separation was performed in a Sephadex LH-20 column (100 X 5 cm i.d.) applying methanol-water-TFA (39.6 60 0.4, v/v) as the mobile phase at a flow rate of 2.5 ml/min. 

Fresh plant materials, Allium sativum (bulb and green), Allium cepa rubra (bulb) wA Allium cepa (bulb and green), were homogenized separately in physiological saline (pH 7.4). Homogenates were centrifuged at 10,000 g at 4°C for 30 min. 

Evandri, M.G., Tucci, P. and Bolle, P. (2000). Toxicological evaluation of commercial mineral water bottled in polyethylene terephthalate a cytogenetic approach with Allium cepa, Food Addit. Contam., 17, 12, 1037-1045. 

Shallot (Allium cepa Aggregatum Group) Welsh onion (AHium fistuhsum)... 

Engle, R. L. Reaction of Onion, Allium cepa L., and Pinto Bean, Phaseolus vul-garb L., to Ozone. Ph.D. Thesis. Madison University of Wisconsin, 1966. 54 pp. 

Engle, R. L., and W. H. Gabelman. Inheritance and mechanism for resistance to ozone damage in onion. Allium cepa L. Proc. Amer. Soc. Hort. Sci. 89 423-430, 1966. 

Ask the average person on the street about "natural products," and he or she is likely to mention the kinds of products found on the shelves of grocery stores and stores that specialize in "organic and "natural foods. Those items are overwhelmingly plant products, and they range from aconitum napellus (monkshood), alfalfa, allium cepa, aloe vera, angelica, and anise seed to witch hazel, yarrow, yellow dock, yohimhe hark, and yucca. 

Aminouracil produces a block in the mitotic cycle of various plants. For example, cessation of mitosis occurred in Vida faba roots incubated 24 h with this compound [392—394]. Depending on different experimental conditions, thymidine or thymidylic acid may or may not alleviate these effects [392—394]. It was concluded that 5-aminouracil depressed the rate of DNA synthesis, which led to an accumulation of cells in the S phase. After removal of the agent, DNA synthesis resumed. Similar results have been observed with Allium cepa and Haplopappus gracilis [395, 396]. Inhibition of guanosine incorporation into RNA of meristematic cells in Vida faba by 5-aminouracil was also reported [397]. 

Beside this dermatoxic activity pederin (147) has various biological activities (92). When administered in appropriate doses to partially hepatectomized rats, this compound stimulates development of hepatic tissues. The inhibitory effect at the cellular level has been found in chicken heart fibroblast cultures, and mice embryo, dog kidney, HeLa, and KB cell lines. In plants, root growth of Lupinus albus is inhibited and mitosis in Allium cepa blocked at the metaphasic stage. Also, pederin (147) inhibits protein synthesis and growth of yeast cells. In addition, the treatment of rat ascites sarcoma with purified extracts of P. fuscipes produces almost complete regression. 

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