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  • HS-GC-MS volatile compounds recovered in freshly pressed 'Wonderful' cultivar and commercial pomegranate juices.

HS-GC-MS volatile compounds recovered in freshly pressed 'Wonderful' cultivar and commercial pomegranate juices.

Food chemistry (2015-07-28)
John C Beaulieu, R E Stein-Chisholm
ABSTRACT

Consumption and production of superfruits has been increasing. Highly colored fruits often have bitter and astringent components that may make them undesirable, especially when processed. Many pomegranate volatile reports involved commercial samples, complicated isolation methods, or blending and concentrating that were from arils only, cultivars other than 'Wonderful', or mixed cultivars. Solid phase microextraction (SPME), polydimethylsiloxane stir bar sorptive extraction, and Tenax adsorption were performed with freshly pressed 'Wonderful' juices, commercial juices and concentrates. Using SPME, 36 compounds were isolated in whole pressed 'Wonderful' juices, including 18 of the 21 consensus compounds. In arils-only juices, 41 compounds were isolated by SPME, including 17 of the consensus volatiles. Dramatic variation existed in volatiles recovered in commercial juices and isolation of consensus compounds was sporadic. This article and summary of the literature serves to possibly deliver an improved volatile data set via a rapid method for fresh and partially processed (pressed) pomegranates.

MATERIALS
Product Number
Brand
Product Description

Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, StableFlex (1 cm), needle size 24 ga, Manual Holder, pk of 3, pink hub
Supelco
SPME Portable Field Sampler, coating PDMS/DVB
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, green hub
Supelco
SPME Sampling Stand, for use with 4 mL vials
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, green hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, StableFlex (1 cm), needle size 24 ga, Autosampler, pk of 3, pink hub
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Manual Holder, pk of 3, red hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, blue hub
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, red hub
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SPME Portable Field Sampler, coating CAR/PDMS
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SPME Sampling Stand, for use with 15 mL vials
Supelco
SPME Fiber Assembly, 7 μm PDMS, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, green hub
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 23 ga, Autosampler, pk of 3, white hub
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SPME Fiber Assembly, 30 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, yellow hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, blue hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, blue hub
Supelco
SPME Fiber Assembly, 30 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, yellow hub
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, red hub
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 24 ga, Autosampler, pk of 3, white hub
Supelco
SPME Fiber Assembly, 85 μm Polyacrylate, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, white hub
Supelco
SPME Portable Field Sampler, coating PDMS
Supelco
SPME Fiber Assembly, 100 μm PDMS, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3, red hub
Supelco
SPME Fiber Assembly, 100 μm PDMS, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 1, red hub
Supelco
SPME Fiber Assembly, 60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Manual Holder, pk of 3, purple hub
Supelco
SPME Fiber Assembly, 60 μm PEG, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 3, purple hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Metal Alloy (1 cm), needle size 23 ga, Autosampler, pk of 1, pink hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, Fused Silica (1 cm), needle size 23 ga, Manual Holder, pk of 3, blue hub
Supelco
SPME Overcoated Fiber Assembly, 65 μm PDMS/DVB, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, notched pink hub
Supelco
SPME Fiber Assembly, 65 μm PDMS/DVB, StableFlex (1 cm), needle size 23 ga, Autosampler, pk of 3, pink hub
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SPME Fiber Assembly Kit, Assortment #1, Fused Silica (1 cm), needle size 24 ga, Manual Holder, pk of 3