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--- corylus_maxima_mill [2015/11/27 12:53]
andreas
+++ corylus_maxima_mill [2021/11/16 11:29] (aktuell)
andreas
@@ Zeile 1: / Zeile 1: @@
-Corylus maxima Mill. - Betulaceae - (giant) filbert, **Lambersthasel**, Lambertnuß
+Corylus maxima Mill. - Betulaceae - (giant) filbert, **Lambertshasel**, Lambertnuß
 The latin name is not accepted as C.maxima is seen as a form of [[corylus_avellana_l|Corylus avellana]]. \\
-Deciduous shrub or tree, up to 10m tall, native to southeastern Europe and southwestern Asia; leaves round to ovate (a purple-leaved form is grown as ornamental); flowers in catkins produced in late winter, the male pale yellow, female bright red; nuts 1.5–2.5cm long, fully enclosed in a 3–5 cm long husk.
+Deciduous shrub or tree, up to 10m tall, native to southeastern Europe and southwestern Asia; leaves round to ovate (a purple-leaved form is grown as ornamental); flowers in catkins produced in late winter, the male pale yellow, female bright red; nuts 1.5-2.5cm long, fully enclosed in a 3-5 cm long husk.
 C. maxima is more sensitive to cold than C.avellana. Their main growing area is located in the Turkish Black Sea region, where three-quarters of the world's produced commercially available "hazelnuts" are produced.
@@ Zeile 8: / Zeile 8: @@
 Giant filberts are bigger and taste slightly sweeter than the fruits of C.avellana. \\
-[[http://www.botanik-bochum.de/html/pflanzenbilder/Haselnuss.htm]]
+[[http://www.botanik-bochum.de/jahrbuch/Pflanzenportraet_Corylus_avellana.pdf]]
+Volatiles of hazelnut oil (Turkey, cold-pressed from roasted seeds) were characterized by high amounts of acetic acid (33.7%), 3-methylbutanal (19.1%), 2-methylbutanal (14.0%), and hexanal (3.3%). Compounds with known impact on roasted notes were 2-methylpyrazine (3.2%), furfural (2.3%), furfurylalcohol (0.5%), dimethylpyrazines (4.4%), γ-butyrolactone (1.1%), and benzaldehyde (0.7%). \\
+[Bail, Stefanie, et al. „Characterization of volatile compounds and triacylglycerol profiles of nut oils using SPME‐GC‐MS and MALDI‐TOF‐MS.“ European journal of lipid science and technology 111.2 (2009): 170-182]
+----
+Hazelnut paste for hazelnut spread: "A set of authentic hazelnut pastes and model samples containing various hazelnut paste amounts (from 0.1% to 28%) were analysed. Due to the variability found in filbertone content, it was not possible to propose a sufficiently robust model for the hazelnut paste quantification, however, filbertone was found to be a proper marker for the quality sorting of commercial hazelnut spreads.  Available  hazelnut  spreads  from  the  market  were  analysed  and  classified  into  three  groups:  samples  with  minimal content of hazelnuts (less than 1%, the filbertone content lower than 4 μg/kg); samples with middle contents of hazelnuts (from 1% to 10%, filbertone 4-45 μg/kg); superior samples with high contents of hazelnuts (above 10%, filbertone above 45 μg/kg)." \\
+[Čížková, H. E. L. E. N. A., et al. "Filbertone as a marker for the assessment of hazelnut spread quality." Czech Journal of Food Sciences 31.1 (2013): 81-87] [[https://www.agriculturejournals.cz/publicFiles/493_2011-CJFS.pdf]] accessed Nov 16 2021.
 {{:corylusmax.jpg}} \\
@@ Zeile 14: / Zeile 22: @@
 [[http://www.plantillustrations.org/species.php?id_species=278054]]
+{{https://www.vdberk.es/site/assets/files/3029/corylus_maxima_purpurea_haselnuss-1.jpg}} \\
+Corylus maxima 'Purpurea' [[https://www.vdberk.es/arboles/corylus-maxima-purpurea/|Boomkwekerij Gebr. Van den Berk B.V.]]

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