Abstract
1. Studies were made to determine the effects of certain insecticides--primarily petroleum oil, parathion, and DDT--on the quality of the juice in freshly picked oranges and on the dry matter in Valencia and navel orange leaves. A few tests were made on grapefruit juice. 2. Oil sprays caused a significant reduction in the concentration of total soluble solids in the juice of oranges and grapefruits and, in the majority of tests, in the dry matter of navel and Valencia orange leaves. 3. Parathion and DDT caused very little if any reduction in the concentration of total soluble solids in the juice of oranges. 4. The effects of the insecticides on the total acids in the juice, and hence on the ratio of solids to acids, were variable; but in about 60% of the tests the acids were at least slightly higher in fruits sprayed with parathion or with DDT than in those sprayed with oil. 5. The ascorbic acid content of the juice of the DDT-treated fruit was noticeably higher than that of the oil-sprayed fruit. 6. The fact that oil sprays were usually found to cause a reduction in concentration of soluble solids and ascorbic acid in the juice should be of special interest to processors who are anxious not only to have a high concentration of soluble solids but also to have it as soon as possible after the picking season begins.
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Claims 9
Claim · model-written summary
Oil sprays significantly reduced total soluble solids in orange and grapefruit juice.
- Taxon
- oranges and grapefruitse0
- Organ / stage
- juicee0
- Treatment
- Oil sprayse0
- Outcome
- total soluble solidse0
- Direction
- reductione0
Not reportedComparator
Verbatim
e0“Oil sprays caused a significant reduction in the concentration of total soluble solids in the juice of oranges and grapefruits”
Claim · model-written summary
Oil sprays reduced dry matter in navel and Valencia orange leaves in most tests.
- Taxon
- orangee0
- Material
- navel and Valenciae0
- Treatment
- Insecticidest0
- Outcome
- dry mattere0
- Direction
- decreaseinferrede0
- Qualifier
- majority of testse0
Not reportedComparator
Verbatim
e0“in the majority of tests, in the dry matter of navel and Valencia orange leaves”
t0“Some Physiological Effects of Insecticides on Citrus Fruits and Leaves”
Claim · model-written summary
Parathion produced very little, if any, reduction in orange juice total soluble solids.
- Taxon
- orangese0
- Treatment
- Parathione0
- Outcome
- total soluble solidse0
- Direction
- very little if any reductione0
Not reportedComparator
Verbatim
e0“Parathion and DDT caused very little if any reduction in the concentration of total soluble solids in the juice of oranges”
Claim · model-written summary
DDT produced very little, if any, reduction in orange juice total soluble solids.
Not reportedComparator
Verbatim
e0“Parathion and DDT caused very little if any reduction in the concentration of total soluble solids in the juice of oranges”
Claim · model-written summary
In about 60% of tests, juice acids were slightly higher after parathion than after oil spray.
Verbatim
e0“in about 60% of the tests the acids were at least slightly higher in fruits sprayed with parathion or with DDT than in those sprayed with oil”
Claim · model-written summary
In about 60% of tests, juice acids were slightly higher after DDT than after oil spray.
Verbatim
e0“in about 60% of the tests the acids were at least slightly higher in fruits sprayed with parathion or with DDT than in those sprayed with oil”
Claim · model-written summary
Effects of the insecticides on juice total acids and solids-to-acids ratio varied.
Not reportedTaxon
Verbatim
e0“The effects of the insecticides on the total acids in the juice, and hence on the ratio of solids to acids, were variable”
Claim · model-written summary
DDT-treated fruit juice had noticeably higher ascorbic acid content than oil-sprayed fruit juice.
Verbatim
e0“The ascorbic acid content of the juice of the DDT-treated fruit was noticeably higher than that of the oil-sprayed fruit”
Claim · model-written summary
Oil sprays usually reduced orange juice ascorbic acid concentration.
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oil sprays were usually found to cause a reduction in concentration of soluble solids and ascorbic acid in the juice”
t0“Citrus Fruits and Leaves”
The same questions in other papers
application · quality: phytochemicals · CitrusPositive and negative results
1 in the opposite direction
- positive
application · quality: sugar starch · Citrus sinensis (sweet orange)Positive and negative results
1 paper in the same direction as this paper · 27 in the opposite direction
- positive
- positive
- positive
25 papers more in this group
See all 29 papers →insecticide · growth · Citrus sinensis (sweet orange)Results agree
1 paper in the same direction as this paper
- no effect
application · quality: sugar starch · Citrus x paradisi (grapefruit)Results agree
1 paper in the same direction as this paper
- negative
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.