Abstract
During the harvest season, rice needs to be dried immediately to prevent deterioration. Therefore, the rice industry must have the capacity to dry fast while minimizing the milling quality loss. The aim of this study was to assess the impact of drying processing variables on milling quality and drying duration, at different stages of drying. To this purpose, a thin-layer lab-scale dryer was used at different drying air temperatures, relative humidities (RH), and grain moisture content (MC) ranges. At MC up to 15%, it was possible to dry at a temperature of 47ºC and 27% RH maintaining a low milling quality loss. At lower MC, the drying air temperature should decrease to 35ºC and 50% RH to maintain the milling quality loss low. This condition increases the drying duration (compared with drying at 47ºC). Therefore, a two-stage drying program was proposed, using more severe drying conditions during the first stage (MC up to 15%) and softening the conditions during the final stage (MC from 15 to 13%). This drying program allows decreasing the drying duration, maintaining a low milling quality loss. The implementation of step-wise drying programs is expected to increase the efficiency of the commercial process.
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Claims 6
Claim · model-written summary
Drying at 47ºC and 27% RH up to 15% moisture content maintained a low milling quality loss.
- Taxon
- rice
Oryza sativae5 - Treatment
- dry at a temperature of 47ºC and 27% RHe0
- Outcome
- milling quality losse0
- Direction
- maintaining a lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At MC up to 15%, it was possible to dry at a temperature of 47ºC and 27% RH maintaining a low milling quality loss”
e5“rice needs to be dried immediately”
Claim · model-written summary
Below 15% moisture content, drying air should be decreased to 35ºC and 50% RH to keep milling quality loss low in rice.
- Taxon
- riceOryza sativae5
- Treatment
- decrease to 35ºC and 50% RHe1
- Outcome
- milling quality losse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At lower MC, the drying air temperature should decrease to 35ºC and 50% RH to maintain the milling quality loss low”
e5“rice needs to be dried immediately”
Claim · model-written summary
Drying at 35ºC and 50% RH increased drying duration compared with drying at 47ºC.
- Taxon
- riceOryza sativae5
- Treatment
- 35ºC and 50% RHe1
- Outcome
- drying duratione2
- Direction
- increasese2
- Comparator
- drying at 47ºCe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“At lower MC, the drying air temperature should decrease to 35ºC and 50% RH to maintain the milling quality loss low”
e2“This condition increases the drying duration (compared with drying at 47ºC)”
e5“rice needs to be dried immediately”
Claim · model-written summary
A two-stage drying program decreased drying duration while keeping milling quality loss low in rice.
- Taxon
- riceOryza sativae5
- Treatment
- two-stage drying programe6
- Outcome
- drying duratione3
- Direction
- decreasinge3
- Qualifier
- maintaining a low milling quality losse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“This drying program allows decreasing the drying duration, maintaining a low milling quality loss”
e6“a two-stage drying program was proposed”
e5“rice needs to be dried immediately”
Claim · model-written summary
A two-stage drying program is proposed for rice drying.
- Taxon
- riceOryza sativae5
- Outcome
- two-stage drying programe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“a two-stage drying program was proposed”
e5“rice needs to be dried immediately”
Claim · model-written summary
Step-wise drying programs are expected to increase the efficiency of the commercial rice drying process.
- Taxon
- riceOryza sativae5
- Treatment
- step-wise drying programse4
- Outcome
- efficiency of the commercial processe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The implementation of step-wise drying programs is expected to increase the efficiency of the commercial process”
e5“rice needs to be dried immediately”
The same questions in other papers
humidity · quality: grain · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →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.