Abstract
To select appropriate plant growth regulator matters(PGRM) of tobacco and optimize roasting techniques,this paper studied the effect of PGRM on dynamic changes of water content,PPO activity and polyphenol content of tobacco during roasting process through plant growthregulator sprays and roasting technology controls.The results showed that,there were significantly different water contents of tobacco leaves among the different PGRM treatments.During 0-36 h,the water content of tobacco was decreased very slowly,and during anaphase,it decreasedobviously under the normal roasting technology.The PPO activity was decreased with roasting time,reaching the lowest point at 60 h under the normal roasting technology.But under the abnormal roasting technology,the PPO activity was decreased at first,and then increased,with the lowest point significantly higher than that under the normal roasting technology.There was no significant difference of polyphenol contents among most treatments,which had an increasing trend compared with control.During roasting prophase,the polyphenol content of PGRM treatment rose,but when entering the roasting anaphase,it was close to the contents in the other treatments.The ratio of high grade flue-cured tobacco in PGRM treatments was significantly higher than that of CK under two roasting conditions.And there was also a higher ratio of high grade flue-cured tobacco under normal roasting technology in comparison with that under abnormal roasting technology.It suggested that applying PGRM could increase the high grade flue-cured tobacco in particular the treatment T4 and T7.
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Claims 12
Claim · model-written summary
Water content differed significantly among PGRM treatments.
- Taxon
- Flue-cured Tobaccot0
- Organ / stage
- tobacco leavese0
- Treatment
- different PGRM treatmentse0
- Outcome
- water contentse0
- Direction
- differente0
Not reportedComparator
Verbatim
e0“there were significantly different water contents of tobacco leaves among the different PGRM treatments”
t0“Flue-cured Tobacco”
Claim · model-written summary
Under normal roasting, tobacco water content decreased slowly in the first 36 hours and more markedly later.
- Taxon
- tobacco
Nicotiana tabacume0 - Outcome
- water contente0
- Direction
- decreased very slowlye0
- Setting
- normal roasting technologye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During 0-36 h,the water content of tobacco was decreased very slowly,and during anaphase,it decreasedobviously under the normal roasting technology”
Claim · model-written summary
PPO activity decreased during normal roasting and reached its lowest point at 60 h.
Verbatim
e0“The PPO activity was decreased with roasting time,reaching the lowest point at 60 h under the normal roasting technology”
t0“Flue-cured Tobacco”
Claim · model-written summary
Under abnormal roasting, PPO activity first decreased and then increased.
Verbatim
e0“under the abnormal roasting technology,the PPO activity was decreased at first,and then increased”
t0“Flue-cured Tobacco”
Claim · model-written summary
The lowest PPO activity under abnormal roasting was significantly higher than under normal roasting.
Verbatim
e0“with the lowest point significantly higher than that under the normal roasting technology”
e1“under the abnormal roasting technology,the PPO activity”
t0“Flue-cured Tobacco”
Claim · model-written summary
Polyphenol content did not differ significantly among most treatments.
- Taxon
- Flue-cured Tobaccot0
- Treatment
- most treatmentse0
- Outcome
- polyphenol contentse0
- Direction
- no significant differencee0
Not reportedComparator
Verbatim
e0“There was no significant difference of polyphenol contents among most treatments”
t0“Flue-cured Tobacco”
Claim · model-written summary
Polyphenol content tended to increase relative to control.
Verbatim
e0“polyphenol contents among most treatments,which had an increasing trend compared with control”
t0“Flue-cured Tobacco”
Claim · model-written summary
Polyphenol content rose during early roasting under PGRM treatment.
Verbatim
e0“During roasting prophase,the polyphenol content of PGRM treatment rose”
t0“Flue-cured Tobacco”
Claim · model-written summary
Later in roasting, PGRM polyphenol content approached that of other treatments.
Verbatim
e0“when entering the roasting anaphase,it was close to the contents in the other treatments”
e1“the polyphenol content of PGRM treatment rose”
t0“Flue-cured Tobacco”
Claim · model-written summary
PGRM significantly increased the high grade tobacco ratio versus CK in both roasting conditions.
Verbatim
e0“The ratio of high grade flue-cured tobacco in PGRM treatments was significantly higher than that of CK under two roasting conditions”
Claim · model-written summary
Normal roasting gave a higher high grade tobacco ratio than abnormal roasting.
Verbatim
e0“there was also a higher ratio of high grade flue-cured tobacco under normal roasting technology in comparison with that under abnormal roasting technology”
Claim · model-written summary
The authors suggest applying PGRM, especially T4 and T7, to increase high grade tobacco.
Verbatim
e0“It suggested that applying PGRM could increase the high grade flue-cured tobacco in particular the treatment T4 and T7”
The same questions in other papers
processing · organism · Nicotiana tabacum (tobacco)Results agree
2 papers in the same direction as this paper
- 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.