Abstract
The main goal of our study was to find an optimal combination of tested factors to achieve lettuce rich in bioactive compounds sustaining its pleasant taste. We examined three red and three green cultivars in a greenhouse using two microbiological fertilisers (EM Aktiv and Vital Tricho), and their combination. Plants were grown in three consecutive growing seasons (autumn, winter, and spring). Lactones accumulated in autumn, whereas phenolics' concentration rose during winter. Red cultivars showed higher phenolics and lactone content, where chicoric acid and luteolin-7-glucoside were the most abundant in the 'Gaugin' winter trial. Lactucopicrin was the predominant lactone among tested cultivars with the highest value in the red cultivar 'Carmesi'. Solely applicated, the fertiliser EM Aktiv and Vital Tricho led to significantly higher phenolic acid and dihydrolactucopicrin content, while combined, there were notably increased levels of all detected lactones. Application of single fertilisers had no effect on flavonoid content, while the combination even reduced it. A sensory analysis showed a negative correlation between overall taste and total sesquiterpene lactones, lactucopicrin, caffeoylmalic, and chlorogenic acid, indicating a less bitter taste with decreasing content of these compounds. Our findings indicate that the cultivar, fertiliser, and growing season jointly affected all of the tested parameters, highlighting the differences in the application of EM Aktiv, Vital Tricho, and their combination.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Lactones accumulated in autumn.
- Taxon
- lettuce
Lactuca sativat0 - Outcome
- Lactonese0
- Direction
- accumulatede0
- Qualifier
- autumne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lactones accumulated in autumn”
t0“Lettuce”
Claim · model-written summary
Phenolics concentration rose during winter.
- Taxon
- lettuceLactuca sativat0
- Outcome
- phenolics' concentratione0
- Direction
- rosee0
- Qualifier
- wintere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenolics' concentration rose during winter”
t0“Lettuce”
Claim · model-written summary
Red cultivars had higher phenolics and lactone content.
- Taxon
- lettuceLactuca sativat0
- Material
- Red cultivarse0
- Outcome
- phenolics and lactone contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Red cultivars showed higher phenolics and lactone content”
t0“Lettuce”
Claim · model-written summary
Chicoric acid and luteolin-7-glucoside were most abundant in the Gaugin winter trial.
- Taxon
- lettuceLactuca sativat0
- Material
- 'Gaugin'e0
- Outcome
- chicoric acid and luteolin-7-glucosidee0
- Direction
- most abundante0
- Qualifier
- winter triale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chicoric acid and luteolin-7-glucoside were the most abundant in the 'Gaugin' winter trial”
t0“Lettuce”
Claim · model-written summary
Lactucopicrin was the predominant lactone and highest in Carmesi.
- Taxon
- lettuceLactuca sativat0
- Material
- 'Carmesi'e0
- Outcome
- Lactucopicrine0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lactucopicrin was the predominant lactone among tested cultivars with the highest value in the red cultivar 'Carmesi'.”
t0“Lettuce”
Claim · model-written summary
EM Aktiv alone significantly increased phenolic acid and dihydrolactucopicrin content.
- Taxon
- lettuceLactuca sativat0
- Treatment
- EM Aktive0
- Outcome
- phenolic acid and dihydrolactucopicrin contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Solely applicated, the fertiliser EM Aktiv and Vital Tricho led to significantly higher phenolic acid and dihydrolactucopicrin content”
t0“Lettuce”
Claim · model-written summary
Vital Tricho alone significantly increased phenolic acid and dihydrolactucopicrin content.
- Taxon
- lettuceLactuca sativat0
- Treatment
- Vital Trichoe0
- Outcome
- phenolic acid and dihydrolactucopicrin contente0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Solely applicated, the fertiliser EM Aktiv and Vital Tricho led to significantly higher phenolic acid and dihydrolactucopicrin content”
t0“Lettuce”
Claim · model-written summary
Combined fertilisers increased all detected lactones.
- Taxon
- lettuceLactuca sativat0
- Treatment
- combinede0
- Outcome
- levels of all detected lactonese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while combined, there were notably increased levels of all detected lactones.”
t0“Lettuce”
Claim · model-written summary
Single fertilisers had no effect on flavonoid content.
- Taxon
- lettuceLactuca sativat0
- Treatment
- single fertiliserse0
- Outcome
- flavonoid contente0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of single fertilisers had no effect on flavonoid content”
t0“Lettuce”
Claim · model-written summary
The fertiliser combination reduced flavonoid content.
- Taxon
- lettuceLactuca sativat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while the combination even reduced it.”
t0“Lettuce”
e1“Application of single fertilisers had no effect on flavonoid content”
Claim · model-written summary
Overall taste correlated negatively with total sesquiterpene lactones.
- Taxon
- lettuceLactuca sativat0
- Compound
- total sesquiterpene lactonese0
- Outcome
- overall tastee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative correlation between overall taste and total sesquiterpene lactones, lactucopicrin, caffeoylmalic, and chlorogenic acid”
t0“Lettuce”
Claim · model-written summary
Overall taste correlated negatively with lactucopicrin.
- Taxon
- lettuceLactuca sativat0
- Compound
- lactucopicrine0
- Outcome
- overall tastee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative correlation between overall taste and total sesquiterpene lactones, lactucopicrin, caffeoylmalic, and chlorogenic acid”
t0“Lettuce”
Claim · model-written summary
Overall taste correlated negatively with caffeoylmalic acid.
- Taxon
- lettuceLactuca sativat0
- Compound
- caffeoylmalice0
- Outcome
- overall tastee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative correlation between overall taste and total sesquiterpene lactones, lactucopicrin, caffeoylmalic, and chlorogenic acid”
t0“Lettuce”
Claim · model-written summary
Overall taste correlated negatively with chlorogenic acid.
- Taxon
- lettuceLactuca sativat0
- Compound
- chlorogenic acide0
- Outcome
- overall tastee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative correlation between overall taste and total sesquiterpene lactones, lactucopicrin, caffeoylmalic, and chlorogenic acid”
t0“Lettuce”
Claim · model-written summary
Lower levels of the named compounds indicated less bitter taste.
- Taxon
- lettuceLactuca sativat0
- Outcome
- less bitter tastee0
- Qualifier
- decreasing content of these compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indicating a less bitter taste with decreasing content of these compounds.”
t0“Lettuce”
The same questions in other papers
fertilization · quality: phytochemicals · Lactuca sativa (garden lettuce)Positive and negative results
9 papers in the same direction as this paper · 39 in the opposite direction
- positive
- positive
- positive
45 papers more in this group
See all 49 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.