Volatile compounds Shiitake mushroom

S-compounds reported in this study are new to the volatiles of Shiitake mushroom (compounds with a in Table II). 

Trithiolanes have received increasing attention since the identification of diastereomeric 3,5-dimethyl-l,2,4-trithiolane in the volatiles of boiled beef (13). The parent 1,2,4-trithiolane is a component of Shiitake mushrooms (14) and red algae (15). In addition to 3,5-dimethyl-l,2,4-trithiolane, Kubota et al. (16) identified 3-methyl-5-ethyl-l,2,4-trithiolane and 3,5-diethyl-l,2,4-tri-thiolane in both syn and anti forms in boiled Antarctic Gulls. Both compounds were described as garlicky. Flament and co-workers (17) reported the identification of 3-methyl-5-ethyl-l,2,4-trithiolane and 3-methyl-5-isopropyl-l,2,4-trithiolane in a commercial beef extract. ... 

Enzymic Formation of Volatile Compounds in Shiitake Mushroom (Lentinus edodes Sing.)... 

Volatile compounds of Shiitake mushroom (Lentinus edodes Sing.) are composed of eight-carbon containing alcohols and sulfur compounds. l-Octen-3-ol and 2-octen-l-ol are the major C8-compounds comprising the "mushroom" character of Shiitake mushroom. The characteristic "sulfurous" note of Shiitake mushroom is composed of cyclic S-compounds, such as lenthionine (C2 H4 S5, 1,2,3,5,6-pentathiepane),... 

Tressl et al. (16, 17) had shown that linolenic acid (C 18 3) could also be enzymically converted to volatile C8-compounds. However, 1,5-octadien-3-ol and 2,5-octadien-l-ol would be two major C8-compounds formed. No significant amount of 1,5-octadien-3-ol and 2,5-octadien-l-ol could be detected in the volatile components of Shiitake mushrooms blended with sunflower oil hydrolysate (Table I). Instead, significant amount of 1,5-octadien-3-ol or 2,5-octa-dien-l-ol was observed in the sample to which soybean oil hydrolysate was added (20). This is in good agreement with the linolenic acid content in sunflower oil (trace) and soybean oil (ca. 7%). ... 

Table II. Volatile sulfurous compounds identified in Shiitake mushroom...

Identification of Volatile Compounds in Shiitake Mushrooms Using Modern Extraction Techniques... 

Eri, S. Da Costa, N.C., Identification of volatile compounds in shiitake mushrooms using modem analytical techniques including GC-olfactometry, 7th Symposium of Flavor Chemistry and Biology, Wartburg, Germany, 2004. 

Trithiane itself has been found among the volatile sulfurous compounds of Shiitake mushrooms extracted from the homogenate of fresh mushrooms <1986JFA830> and 2,4,6-triethyl-l,3,5-trithiane was identified among the flavor compounds in the steam distillate of onions <1992MI459> analyzed by GC and characterized by GC-MS. Other than that, 1,3,5-trioxane derivatives are not found that often in natural products as their sulfur analogs. Only... 

The pentathiocane (278) has been isolated and identified by mass spectrometry as a volatile component of Shiitake mushrooms (Lentinus edodes Sing.) <86Mi 926-01 >. The compound s genesis is believed to be via methylene disulfide <86MI 926-02). 

Shiitake mushroom (Lentinus edodes Sing) is an important ingredient in the Oriental cuisine because it contributes a special aroma to foods. There were two classes of volatiles in shiitake, including eight-carbon and sulfur-containing compounds (Chen and Wu, 1984 ... 

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