Vitamins a and C in Ripe Tomatoes as Affected by Stage of Ripeness at Harvest and by Supplementary Ethylene

Watada, Alley E.; Aulenbach, Barbara B.; Worthington, John T.

doi:10.1111/j.1365-2621.1976.tb00738_41_4.x

Cited by 37 publications

(13 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The overall mean titratable acidity over all treatments in this experiment was 0.66% by weight with values ranging from 0.62 to 0.82 ( Table 4 ). These values are comparable to those repored by Watada[ 46 ] and Paulson[ 47 ]. They reported values ranging from 20 to 56 mmol liter -1 citric acid and 3 to 12 mmol liter -1 malic acid in the ripe fruit juice of a large number of fresh market tomato cultivars.…”

Section: Discussionsupporting

confidence: 92%

Effect of Post-Infiltration Soil Aeration at Different Growth Stages on Growth and Fruit Quality of Drip-Irrigated Potted Tomato Plants (Solanum lycopersicum)

Zhang

Wang

et al. 2015

PLoS ONE

View full text Add to dashboard Cite

Soil hydraulic principles suggest that post-infiltration hypoxic conditions would be induced in the plant root-zone for drip-irrigated tomato production in small pots filled with natural soil. No previous study specifically examined the response of tomato plants (Solanum lycopersicum) at different growth stages to low soil aeration under these conditions. A 2 × 6 factorial experiment was conducted to quantify effects of no post-infiltration soil aeration versus aeration during 5 different periods (namely 27–33, 34–57, 58–85, 86–99, and 27–99 days after sowing), on growth and fruit quality of potted single tomato plants that were sub-surface trickle-irrigated every 2 days at 2 levels. Soil was aerated by injecting 2.5 liters of air into each pot through the drip tubing immediately after irrigation. Results showed that post-infiltration aeration, especially during the fruit setting (34–57 DAS) and enlargement (58–85 DAS) growth stages, can positively influence the yield, root dry weight and activity, and the nutritional (soluble solids and vitamin C content), taste (titratable acidity), and market quality (shape and firmness) of the tomato fruits. Interactions between irrigation level and post-infiltration aeration on some of these fruit quality parameters indicated a need for further study on the dynamic interplay of air and water in the root zone of the plants under the conditions of this experiment.

show abstract

Section: Discussionsupporting

confidence: 92%

Effect of Post-Infiltration Soil Aeration at Different Growth Stages on Growth and Fruit Quality of Drip-Irrigated Potted Tomato Plants (Solanum lycopersicum)

Zhang

Wang

et al. 2015

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…Nevertheless, this fluctuation is usual in compounds such as l-ascorbic acid, so prone to environmental effects. As an example, the cultivar DoubleRich developed from crosses with S. peruvianum has been reported to have contents from 318 mg kg −1 (Watada et al, 1976) to 500 mg kg −1 (Stevens and Rick, 1986). Several aspects explain these large variation levels, with temperature and mainly sun radiation playing a predominant role in ascorbic acid accumulation (reviewed in Dumas et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Exploring alternative germplasm for the development of stable high vitamin C content in tomato varieties

Leiva-Brondo

Valcárcel

Cortés-Olmos

et al. 2012

Scientia Horticulturae

View full text Add to dashboard Cite

a b s t r a c tThe genotypic potential for high l-ascorbic acid content of 15 accessions of S. lycopersicon and S. pimpinellifolium has been evaluated in three environments, including open-air and glasshouse cultivation and two localities. The environmental effect on l-ascorbic acid accumulation was highly genotype-dependant and the variance ascribed to the G×E environment was similar in importance to that ascribed to genotype. The variation found within accession might be ascribed to microenvironmental effects associated with temperature changes and oxidative stress or population variability. Several accessions with high genotypic values ( +G) have been identified. Among them, accession PI365959 of S. pimpinellifolium, showed a genotypic value of 293.8 mg kg −1 , statistically significant higher (P < 0.05) than the genotypic potential of controls reported to have high l-ascorbic content (CDP4777, 115.0 mg kg −1 ). It also showed positive G×E interactions, with a relatively high stability. Accession LA1423 of S. lycopersicon var. cerasiforme, despite being less stable, had also high genotypic values for l-ascorbic acid accumulation (197.4 mg kg −1 ). This germplasm will be of great interest for the development of new tomato cultivars targeted to added-value markets appreciating nutritional or functional quality. The close relationship of the selected material with the cultivated tomato will enable an efficient and rapid exploitation of their potential in breeding programmes.

show abstract

“…Several investigators reported an increase in ascorbic acid content with ripening with either a continuing rise or a slight fall during the final stages of ripening (Dalal et al 1965). For example Brecht et al (1976) found increased vitamin C content with ripeness while Watada et al (1976) reported that there were no change in vitamin C content with ripeness. The intercultivar difference in vitamin C content both in the processing and fresh market tomatoes varied in this study is similar to those reported by Mohammed et al (1999).…”

Section: Tomato Varietiesmentioning

confidence: 99%

Effects of variety on the quality of tomato stored under ambient conditions

2011

View full text Add to dashboard Cite

Three processing and six fresh market tomato varieties harvested at "mature green" stage were evaluated for changes in quality. The total soluble solid, titratable acidity, sugar-acid ratio, pH, ascorbic acid content, colour and firmness were assessed. The storage room air temperature and relative humidity varied from 15.4(○)C to 16.2(○)C and 34.8% to 52.4%, respectively. At harvest, Marglobe Improved had better chemical quality characteristics compared with the other five fresh market varieties while towards the end of the storage period, chemical quality characteristics were maintained better in Fetane. The highest pH and sugar/acid ratio were obtained in Metadel compared with all other varieties throughout the storage period. Among the processing tomato variety, Roma VF had better chemical quality than other two processing varieties. Melkashola had the highest total soluble solid content in the group. Although the processing varieties ripened earlier than fresh market ones, they were notably firmer with better quality. The processing types were better in their chemical quality than fresh market genotypes. The fresh table tomato varieties had higher sugar-acid ratio and vitamin C. Marglobe Improved and Metadel could be selected in favor of higher nutritional quality whereas Fetane could be considered for maintenance of better overall quality characteristics.

show abstract

Vitamins a and C in Ripe Tomatoes as Affected by Stage of Ripeness at Harvest and by Supplementary Ethylene

Cited by 37 publications

References 6 publications

Effect of Post-Infiltration Soil Aeration at Different Growth Stages on Growth and Fruit Quality of Drip-Irrigated Potted Tomato Plants (Solanum lycopersicum)

Effect of Post-Infiltration Soil Aeration at Different Growth Stages on Growth and Fruit Quality of Drip-Irrigated Potted Tomato Plants (Solanum lycopersicum)

Exploring alternative germplasm for the development of stable high vitamin C content in tomato varieties

Effects of variety on the quality of tomato stored under ambient conditions

Contact Info

Product

Resources

About