(Z)-3-Hexenyl and trans-Linalool 3,7-oxide β-Primeverosides Isolated as Aroma Precursors from Leaves of a Green Tea Cultivar

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  6-O-β-D-Xylopyranosyl-β-D-glucopyranosides (β-primeverosides) of (Z)-3-hexenol and trans-linalool 3,7-oxide were newly isolated from fresh leaves of a tea cultivar (Camellia sinensis var. sinensis cv. Yabukita). In addition, the already identified β-primeverosides of benzyl alcohol, methyl salicylate, and trans-linalool 3,6-oxide from an oolong tea cultivar were isolated from the Yabukita cultivar. It was confirmed that all aglycones of the linalool oxide glycosides isolated here were of the optically active S-form by chiral GC after enzymatic hydrolysis with glycosidase.