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Sinapis alba L. - Brassicaceae white mustard, Weißer Senf
Annual herb, up to 1m high, native to Europe, Mediterranean; basal leaves hairy, layrate, irregularly incised, with large terminal lobe; upper leaves ovate or oblong-ovate, coarsely dentate; flowers bright yellow; fruit a bristly pod with 4-8 yellowish seeds.
„The seeds are used for the manufacture of table mustard and also for the extraction of oils, which are used for cooking and making soap and mayonnaise. The species is a cosmopolitan, naturalized weed.“
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200009674
„p-Hydroxybenzyl isothiocyanate is the constituent responsible for both flavour and aroma in white mustard. This isothiocyanate is not present in the free state as such but is produced as a result of hydrolysis of sinalbin present in the mustard.“
[Volumetric determination of p‐hydroxybenzyl isothiocyanate in sinalbin (p‐hydroxybenzylglucosinolate) and in white mustard seed (Sinapis alba L)., Raghavan, B., Shankaranarayana, M.L., Nagalakshmi, S., Natarajan, C.P., Journal of the Science of Food and Agriculture, Vol.22(10), 1971, 523-525]
„Allyl isothiocyanate (AITC) and phenethyl isothiocyanate (PEITC) were isolated from Sinapis alba L. seeds and their effects against Dermatophagoides farinae and D. pteronyssinus were evaluated using the impregnated fabric disk method. The LD50 values of their compounds and derivatives were then compared with those of a commercial acaricide, benzyl benzoate. On the basis of the LD50 values against D. farinae, PEITC (0.21 μg/cm2) was the most toxic, followed by benzyl isothiocyanate (0.55 μg/cm2), phenyl isothiocyanate (1.09 μg/cm2), butyl isothiocyanate (1.24 μg/cm2), and AITC (1.36 μg/cm2).“
[Acaricidal Constituents Isolated from Sinapis alba L. Seeds and Structure− Activity Relationships., Lim, J.H., Kim, H.W., Jeon, J.H., Lee, H.S., Journal of agricultural and food chemistry, Vol.56(21), 2008, 9962-9966]
Köhler, F.E., Medizinal Pflanzen, vol. 3: t. 18 (1890)
http://www.plantillustrations.org/species.php?id_species=949542