Abstract
【Objective】 The effects of microbial preparation on starch degradation and the content of neutral aroma components of flue-cured tobacco were studied.【Method】 The influences of spraying microbial preparation on starch and neutral aroma components of upper leaves of flue-cured tobacco before 12 h of the flue-curing were studied by using the electric-heated flue-curing barn designed and made by Henan Agriculture University.This research totally sets 8 types of microbial preparation including spraying 10,20,40,80 U/g α-amylase,40 U/g α-amylase + gluco-amylase,40 U/g α-amylase + gluco-amylase + yeast,40 U/g α-amylase + gluco-amylase + neutral protease and 30 U/g self-made fermented liquid by contrasting with distilled water.【Result】 Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.The total sugar content of each treatment significantly increased compared with that of control.Though each treatment could increase the content of neutral aroma components to some extent,differences between treatments were significant and the changes were very complex.Through the analysis of the content of neutral aroma components,especially the products degraded by carotenoid and products of Maillard reaction,spraying 40 U/g α-amylase + gluco-amylase + yeast and self-made fermented liquid had better effect.【Conclusion】 Spraying microbial preparation on decreasing starch and improving neutral aroma component contents of upper leaves before 12 h in the flue-curing had better effect,but indexes of evaluating effects were still inadequate.
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Claims 9
Claim · model-written summary
Fermented liquid significantly decreased starch content.
- Taxon
- flue-cured tobaccot0
- Treatment
- self-made fermented liquide0
- Outcome
- starch contente0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
Alpha-amylase significantly decreased starch content.
Not reportedComparator
Verbatim
e0“Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
The enzyme and yeast mixture significantly decreased starch content.
- Taxon
- flue-cured tobaccot0
- Treatment
- mixture of α-amylase,gluco-amylase,neutral protease,and yeaste0
- Outcome
- starch contente0
- Direction
- decreasee0
Not reportedComparator
Verbatim
e0“Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
80 U/g alpha-amylase had a better starch reduction effect.
Not reportedComparator
Verbatim
e0“Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
40 U/g alpha-amylase with gluco-amylase and protease had a better starch reduction effect.
- Taxon
- flue-cured tobaccot0
- Treatment
- 40 U/g α-amylase + gluco-amylase + proteasee0
- Outcome
- starch contente0
- Direction
- better effecte0
Not reportedComparator
Verbatim
e0“Spraying a certain dose of self-made fermented liquid,α-amylase,and the mixture of α-amylase,gluco-amylase,neutral protease,and yeast could decrease the starch content significantly,and among them,spraying 80 U/g α-amylase and 40 U/g α-amylase + gluco-amylase + protease had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
Every treatment significantly increased total sugar content relative to control.
Verbatim
e0“The total sugar content of each treatment significantly increased compared with that of control.”
t0“flue-cured tobacco”
Claim · model-written summary
Treatments increased neutral aroma component content to varying degrees.
- Taxon
- flue-cured tobaccot0
- Treatment
- each treatmente0
- Outcome
- content of neutral aroma componentse0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“Though each treatment could increase the content of neutral aroma components to some extent,differences between treatments were significant and the changes were very complex.”
t0“flue-cured tobacco”
Claim · model-written summary
The alpha-amylase, gluco-amylase and yeast spray had a better aroma effect.
- Taxon
- flue-cured tobaccot0
- Treatment
- 40 U/g α-amylase + gluco-amylase + yeaste0
- Outcome
- content of neutral aroma componentse0
- Direction
- better effecte0
Not reportedComparator
Verbatim
e0“Through the analysis of the content of neutral aroma components,especially the products degraded by carotenoid and products of Maillard reaction,spraying 40 U/g α-amylase + gluco-amylase + yeast and self-made fermented liquid had better effect.”
t0“flue-cured tobacco”
Claim · model-written summary
Fermented liquid had a better aroma effect.
- Taxon
- flue-cured tobaccot0
- Treatment
- self-made fermented liquide0
- Outcome
- content of neutral aroma componentse0
- Direction
- better effecte0
Not reportedComparator
Verbatim
e0“Through the analysis of the content of neutral aroma components,especially the products degraded by carotenoid and products of Maillard reaction,spraying 40 U/g α-amylase + gluco-amylase + yeast and self-made fermented liquid had better effect.”
t0“flue-cured tobacco”
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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.