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Production of Essential Oils
Published in K. Hüsnü Can Başer, Gerhard Buchbauer, Handbook of Essential Oils, 2020
The reason for extracting citrus oils from fruit peel using mechanical methods is the relative thermal instability of the aldehydes contained in them. Fatty, for example, aliphatic, aldehydes such as heptanal, octanal, nonanal, decanal, and dodecanal are readily oxidized by atmospheric oxygen, which gives rise to the formation of malodorous carboxylic acids. Likewise, terpenoid aldehydes such as neral, geranial, citronellal, and perillaldehyde as well as the α- and β-sinensals are sensitive to oxidation. Hydrodistillation of citrus fruit yields poor quality oils owing to chemical reactions that can be attributed to heat and acid-initiated degradation of some of the unstable fruit volatiles. Furthermore, some of the terpenic hydrocarbons and esters contained in the peel oils are also sensitive to heat and oxygen. One exception to this does exist. Lime oil of commerce can be either cold pressed or steam distilled. The chemical composition of these two types of oil as well as their odors differs significantly from each other. The expressed citrus peel is normally treated with hot steam in order to recover any essential oil still left over in it. The products of this process, consisting mainly of limonene, are used in the solvent industry. The remaining peel and fruit flesh pulp are used as cattle feed.
Antiproliferative and cytotoxic activities of furocoumarins of Ducrosia anethifolia
Published in Pharmaceutical Biology, 2018
Javad Mottaghipisheh, Márta Nové, Gabriella Spengler, Norbert Kúsz, Judit Hohmann, Dezső Csupor
The phytochemical profile of D. anethifolia has only been partly explored. In the literature, the majority of papers deal with the composition of the essential oil (EO). As major constituents, α-pinene (11.6% (Mostafavi et al. 2008), 70.3% (Mottaghipisheh et al. 2014), 59.2% (Janssen et al. 1984)); n-decanal (1.4-45% (Karami and Bohlooli 2017), 45.06% (Vazirzadeh et al. 2017), 70% (Hajhashemi et al. 2010), 57% (Mahboubi and Feizabadi 2009), 25.6–30.3% (Mazloomifar and Valian 2015), 18.8% (Sefidkon and Javidtash 2002)), dodecanal (28.8% (Shahabipour et al. 2013)), cis-chrysanthenyl acetate (72.28%) (Ashraf et al. 1979; Habibi et al. 2017) have been reported.
Extracts of the Wild Potato Species Solanum chacoense on Breast Cancer Cells: Biochemical Characterization, In Vitro Selective Cytotoxicity and Molecular Effects
Published in Nutrition and Cancer, 2021
Daniel Cruceriu, Zorita Diaconeasa, Sonia Socaci, Carmen Socaciu, Ovidiu Balacescu, Elena Rakosy-Tican
Terpenoids, aldehydes and ketones were all found in higher abundances in the tuber extract in comparison to the leaf formulation. Limonene, octanal, nonanal and acetophenones had much higher relative abundances in the tuber extract and eucalyptol**, decanal, dodecanal and fatty alcohols (octanol and dodecanol) were found only in this plant preparation. The only class of compounds that was found in higher percentages in the leaf extract was the class of esters, with butyl acetate being accountable for 53.7% of the total volatile constituents in this S. chacoense preparation (Table 4).