Abstract
To improve aroma quality of flue-cured tobacco leaf and optimize curing technology,effects of different dry and wet bulb temperatures during stem drying stage of bulk curing on tobacco aroma components and smoking quality were studied.Results showed that,when the dry bulb temperature was 54-60 ℃,wet bulb temperature was 38 ℃ before stem-drying stage and the dry bulb temperature was 60-68 ℃,wet bulb temperature was 41 ℃ after stem-drying stage,it could remarkably increase the total contents of aroma components in tobacco leaves.And the leaves had higher contents of degradation products of carotenoid(31.250 μg/g),phenylalanine(11.426 μg/g),browning reaction(4.074 μg/g),cemdrenoid(44.329 μg/g),neophytadiene(407.909 μg/g).The content of carotenoid degraded products and megastigmatrienones(11.161 μg/g),which played important roles in improving tobacco aroma quality,increased 25.88%,35.07% compared to CK.The leaves characterized by preferable flavor notes,clean and adequate volume of aroma,moderate taste concentration and physiological strength,little irritancy and good taste scored the highest by sensory evaluation.In conclusion,the wet bulb temperature of 38 ℃ in the earlier stem drying stage and 41 ℃ in the later could significantly improve the aroma quality of flue-cured tobacco leaves.
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Claims 10
Claim · model-written summary
Specified dry and wet bulb curing temperatures increased total aroma component content.
- Taxon
- tobacco
Nicotiana tabacume0 - Organ / stage
- leavese0
- Treatment
- dry bulb temperature was 54-60 ℃,wet bulb temperature was 38 ℃ before stem-drying stage and the dry bulb temperature was 60-68 ℃,wet bulb temperature was 41 ℃ after stem-drying stagee0
- Outcome
- total contents of aroma componentse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the dry bulb temperature was 54-60 ℃,wet bulb temperature was 38 ℃ before stem-drying stage and the dry bulb temperature was 60-68 ℃,wet bulb temperature was 41 ℃ after stem-drying stage,it could remarkably increase the total contents of aroma components in tobacco leaves”
Claim · model-written summary
Cured leaves contained 31.250 μg/g of carotenoid degradation products.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- degradation products of carotenoide0
- Value
- 31.250 μg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“degradation products of carotenoid(31.250 μg/g)”
t0“tobacco”
Claim · model-written summary
Cured leaves contained 11.426 μg/g of phenylalanine related products.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- phenylalaninee0
- Value
- 11.426 μg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenylalanine(11.426 μg/g)”
t0“tobacco”
Claim · model-written summary
Cured leaves contained 4.074 μg/g of browning reaction products.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- browning reactione0
- Value
- 4.074 μg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“browning reaction(4.074 μg/g)”
t0“tobacco”
Claim · model-written summary
Cured leaves contained 44.329 μg/g of cemdrenoid products.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- cemdrenoide0
- Value
- 44.329 μg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cemdrenoid(44.329 μg/g)”
t0“tobacco”
Claim · model-written summary
Cured leaves contained 407.909 μg/g of neophytadiene.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- neophytadienee0
- Value
- 407.909 μg/ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neophytadiene(407.909 μg/g)”
t0“tobacco”
Claim · model-written summary
Carotenoid degraded products increased 25.88% compared with CK.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- content of carotenoid degraded productse0
- Direction
- increasede0
- Value
- 25.88%e0
- Comparator
- CKe0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of carotenoid degraded products and megastigmatrienones(11.161 μg/g),which played important roles in improving tobacco aroma quality,increased 25.88%,35.07% compared to CK”
t0“tobacco”
Claim · model-written summary
Megastigmatrienones were 11.161 μg/g and increased 35.07% compared with CK.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- megastigmatrienonese0
- Direction
- increasede0
- Value
- 35.07%e0
- Qualifier
- 11.161 μg/ge0
- Comparator
- CKe0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“megastigmatrienones(11.161 μg/g),which played important roles in improving tobacco aroma quality,increased 25.88%,35.07% compared to CK”
t0“tobacco”
Claim · model-written summary
The treated leaves received the highest sensory score for aroma and taste quality.
- Taxon
- tobaccoNicotiana tabacumt0
- Outcome
- sensory evaluatione0
- Direction
- higheste0
- Qualifier
- preferable flavor notes,clean and adequate volume of aroma,moderate taste concentration and physiological strength,little irritancy and good tastee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The leaves characterized by preferable flavor notes,clean and adequate volume of aroma,moderate taste concentration and physiological strength,little irritancy and good taste scored the highest by sensory evaluation”
t0“tobacco”
Claim · model-written summary
Wet bulb temperatures of 38 ℃ then 41 ℃ significantly improved tobacco leaf aroma quality.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- wet bulb temperature of 38 ℃ in the earlier stem drying stage and 41 ℃ in the latere0
- Outcome
- aroma qualitye0
- Direction
- improvee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the wet bulb temperature of 38 ℃ in the earlier stem drying stage and 41 ℃ in the later could significantly improve the aroma quality of flue-cured tobacco leaves”
The same questions in other papers
processing · quality: phytochemicals · Nicotiana tabacum (tobacco)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.