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Merck
CN

An indirect assay for volatile compound production in yeast strains.

Scientific reports (2014-01-16)
Davide Ravasio, Andrea Walther, Kajetan Trost, Urska Vrhovsek, Jürgen Wendland
PMID24424137
ABSTRACT

Traditional flavor analysis relies on gas chromatography coupled to mass spectrometry (GC-MS) methods. Here we describe an indirect method coupling volatile compound formation to an ARO9-promoter-LacZ reporter gene. The resulting β-galactosidase activity correlated well with headspace solid phase micro extraction (HS/SPME) GC-MS data, particularly with respect to the formation of rose flavor. This tool enables large-scale screening of yeast strains and their progeny to identify the most flavor active strains.

MATERIALS
Product Number
Brand
Product Description
504823
Supelco
SPME Portable Field Sampler, coating PDMS
57300-U
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, red hub
57302
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, green hub
57303
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, green hub
57329-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 3, plain gray hub
57346-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 23 ga, Manual Holder, pk of 3, blue hub
57359-U
Supelco
SPME Portable Field Sampler, coating PDMS/DVB
57333-U
Supelco
SPME Sampling Stand, for use with 4 mL vials
57294-U
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, white hub
57291-U
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, green hub
57295-U
Supelco
SPME Fiber Assembly, 85 μm CAR/PDMS, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, light blue hub
57335-U
Supelco
SPME Fiber Assembly, 85 μm CAR/PDMS, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 3, light blue hub
57328-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (1cm), needle size 24 ga, Manual Holder, pk of 3, plain gray hub
57345-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, blue hub
57299-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (2cm), needle size 23 ga, Autosampler, pk of 3, notched gray hub
57301
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, red hub
57305
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, white hub
57318
Supelco
SPME Fiber Assembly, 75 μm CAR/PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, black hub
504831
Supelco
SPME Portable Field Sampler, coating CAR/PDMS
57341-U
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, red hub
57304
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, white hub
57319
Supelco
SPME Fiber Assembly, 75 μm CAR/PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, black hub
57308
Supelco
SPME Fiber Assembly, 30 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, yellow hub
57343-U
Supelco
SPME Fiber Assembly, 75 μm CAR/PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, black hub
57344-U
Supelco
SPME Fiber Assembly, 75 μm CAR/PDMS, Fused Silica (1 cm), needle size 23 ga, Manual Holder, pk of 3, black hub
57311
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, blue hub
57357-U
Supelco
SPME Sampling Stand, for use with 15 mL vials
57310-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, blue hub
57326-U
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, StableFlex (1 cm), needle size 24 ga, Manual Holder, pk of 3, pink hub
57348-U
Supelco
SPME Fiber Assembly, 50/30µm DVB/CAR/PDMS, StableFlex (2cm), needle size 24 ga, Autosampler, pk of 3, notched gray hub