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--- eutrema_japonicum_miq._koidz [2022/10/21 11:37]
andreas
+++ eutrema_japonicum_miq._koidz [2023/12/07 13:02] (aktuell)
andreas
@@ Zeile 19: / Zeile 19: @@
 [Comparison of flavour compounds in wasabi and horseradish., Sultana, T., Savage, G. P., McNeil, D. L., Porter, N. G., Clark, B., Journal of Food Agriculture & Environment, Vol.1(2), 2003, 117-121] [[http://www.coppersfolly.co.nz/v1/research/comparison2.pdf]]
-| {{:allylitc.jpg|allyl isothiocyanate}} \\ allyl isothiocyanate \\ //(pungent mustard)// | {{:octa15diene3one.jpg|(Z)-octa-1,5-dien-3-one}} \\ (Z)-octa-1,5-dien-3-one \\ //(green geranium)// | {{:3methyl24nonandione.jpg|3-methyl-2,4-nonanedione}} \\ 3-methyl-2,4-nonanedione \\ //(fruity hay)// | {{:pyrazine_2meo3isopropyl.png|2-methoxy-3-isopropylpyrazine}} \\ 2-methoxy-3-isopropylpyrazine \\ //(earthy green)//|
+| {{:allylitc.jpg|allyl isothiocyanate}} \\ allyl isothiocyanate \\ //(pungent mustard)// | {{:octa15diene3one.jpg|(Z)-octa-1,5-dien-3-one}} \\ (Z)-octa-1,5-dien-3-one \\ //(green geranium)// | {{:3methyl24nonandione.jpg|3-methyl-2,4-nonanedione}} \\ 3-methyl-2,4-nonanedione \\ //(fruity hay)// | {{:pyrazine_2meo3isopropyl.png|2-methoxy-3-isopropylpyrazine}} \\ 2-methoxy-3-isopropylpyrazine \\ //(earthy green)//| {{:3r4r3methyl4decanolide.jpg|(3R,4R)-3-methyl-4-decanolide}} \\ (3R,4R)-3-methyl-4-decanolide \\ //(lactonic green)// |
-"Freshly grated wasabi aroma was investigated by aroma extract dilution analysis. At the highest flavor dilution factors of 1024 and 256, ten odorants were detected as odor-active compounds: allyl isothiocyanate, (Z)-1,5-octadien-3-one, 4-pentenyl isothiocyanate, 5-hexenyl isothiocyanate, 3-methyl-2-butene-1-thiol, 2-isopropyl-3-methoxypyrazine, 3-methyl-2,4-nonanedione, cis-3-methyl-4-decanolide, 6-(methylthio) hexyl isothiocyanate, and vanillin. To determine the absolute configuration of cis-3-methyl-4-decanolide in wasabi, the stereoisomers of 3-methyl-4-decanolide were synthesized from optically active γ-decalactone. Finally, the absolute configuration of cis-3-methyl-4-decanolide in wasabi was determined as (3R,4R)-3-methyl-4-decanolide by chiral GC-MS. Sensory analysis revealed that the (3R,4R)-3-methyl-4-decanolide constitutes an essential part of fresh wasabi aroma." \\
+"Freshly grated wasabi aroma was investigated by aroma extract dilution analysis. At the highest flavor dilution factors of 1024 and 256, ten odorants were detected as odor-active compounds: allyl isothiocyanate, (Z)-1,5-octadien-3-one, 4-pentenyl isothiocyanate, 5-hexenyl isothiocyanate, 3-methyl-2-butene-1-thiol, 2-isopropyl-3-methoxypyrazine, 3-methyl-2,4-nonanedione, cis-3-methyl-4-decanolide, 6-(methylthio)hexyl isothiocyanate, and vanillin. To determine the absolute configuration of cis-3-methyl-4-decanolide in wasabi, the stereoisomers of 3-methyl-4-decanolide were synthesized from optically active γ-decalactone. Finally, the absolute configuration of cis-3-methyl-4-decanolide in wasabi was determined as (3R,4R)-3-methyl-4-decanolide by chiral GC-MS. Sensory analysis revealed that the (3R,4R)-3-methyl-4-decanolide constitutes an essential part of fresh wasabi aroma." \\
-[Nakanishi, Akira, et al. "(3 R, 4 R)-3-Methyl-4-decanolide, a Novel Lactone Contributing to Fresh Wasabi (Wasabia japonica) Aroma." Importance of Chirality to Flavor Compounds. American Chemical Society, 2015. 99-108]
+[Nakanishi, Akira, et al. "(3R,4R)-3-Methyl-4-decanolide, a Novel Lactone Contributing to Fresh Wasabi (Wasabia japonica) Aroma." Importance of Chirality to Flavor Compounds. American Chemical Society, 2015. 99-108]
+Synthesis of both enantiomers of cis-3-methyl-4-decanolide showed that the (3R,4R) isomer has a lactonic-fatty top note and a lactonic-green middle note. \\
+[Masuzawa, Yoko, Shigeyuki Tamogami, and Takeshi Kitahara. "Synthesis of both enantiomers of cis-methyl-4-decanolide, a key component for the scent of African orchids." Natural Product Letters 13.4 (1999): 239-246]
+----
+"The main bioactive compound of wasabi is 6-MSITC (6 methylsulfinyl hexyl isothiocyanate), which has anti-oxidant and anti-inflammatory functions. Anti-oxidants and anti-inflammatories have an important role in cognitive health. Therefore, 6-MSITC is expected to have positive effects on cognitive function. Previous studies showed the beneficial effects on cognitive functions in middle-aged adults. However, it is unclear that 6-MSITC has a positive effect on cognitive functions in healthy older adults aged 60 years and over. Here, we investigated whether 12 weeks’ 6-MSITC intervention enhances cognitive performance in older adults using a double-blinded randomized controlled trial (RCT). Methods: Seventy-two older adults were randomly assigned to 6-MSITC or placebo groups. Participants were asked to take a supplement (6-MSITC or a placebo) for 12 weeks... We found two main findings. First, the 6-MSITC intervention improved working memory capacity as measured by DS-B compared to the placebo group. Second, the 6-MSITC intervention improved episodic memory performances as measured by LM and FSM. ... This study firstly demonstrates scientific evidence that 6-MSITC may enhance working memory and episodic memory in older adults. We discuss the potential mechanism for improving cognitive functions after 6-MSITC intake." \\
+[Nouchi, Rui, et al. "Benefits of Wasabi Supplements with 6-MSITC (6-Methylsulfinyl Hexyl Isothiocyanate) on Memory Functioning in Healthy Adults Aged 60 Years and Older: Evidence from a Double-Blinded Randomized Controlled Trial." Nutrients 15.21 (2023): 4608]
 {{:wasabia_japonica.jpg}} \\
 Wasabia japonica, Aizu area, Fukushima pref., Japan \\
 Author: Qwert1234[[https://creativecommons.org/licenses/by-sa/3.0/de/|CC BY-SA 3.0]]    [[https://commons.wikimedia.org/wiki/File:Wasabia_japonica_1.JPG|Wikimedia Commons]]

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