The influence of glycoalkaloids, chlorogenic acid and sugars on the susceptibility of potato tubers to wireworm

1994 ◽  
Vol 37 (3) ◽  
pp. 205-216 ◽  
Author(s):  
T. Jonasson ◽  
Kerstin Olsson
2014 ◽  
Vol 62 (31) ◽  
pp. 7671-7675 ◽  
Author(s):  
Ana Mariel Torres-Contreras ◽  
Vimal Nair ◽  
Luis Cisneros-Zevallos ◽  
Daniel A. Jacobo-Velázquez

2019 ◽  
Vol 65 (No. 7) ◽  
pp. 355-360
Author(s):  
Matyáš Orsák ◽  
Karel Hamouz ◽  
Jaromír Lachman ◽  
Pavel Kasal

In three-year field experiments, the effect of genotype, flesh color, site conditions and storage on chlorogenic acid content (CAC) in tubers of potato cultivars with purple or red flesh was compared to yellow-fleshed cv. Agria. The results confirmed the significant effect of genotype on CAC. The highest CAC was characteristic on a three-year mean for the purple-fleshed cv. Vitelotte (769.5 mg/kg fresh weight (FW)), i.e. 1.19−2.6 times higher than in the other cultivars. In regard to the effect of flesh color, significantly higher mean CAC levels have been shown for the red-fleshed (2.8 times) and purple-fleshed (3.16 times) cultivars in comparison with cv. Agria (148 mg/kg FW). At the Uhříněves location with a warmer climate and frequent dry periods as compared to the second Valečov location, a higher CAC (1.18 times) was found. Cold storage (4°C, 6 months) resulted in a significant CAC increase varying from 33.2% in the Blaue St. Galler cultivar to 210.6% in the Vitelotte cultivar among all eight evaluated color-fleshed cultivars. On the other hand, the effect of storage on CAC was not evident in the yellow-fleshed Agria cultivar (inconclusive difference against CAC after harvest).


1985 ◽  
Vol 65 (3) ◽  
pp. 793-795 ◽  
Author(s):  
D. R. LYNCH ◽  
M. S. KALDY

Citric acid and potassium contents were determined for Russet Burbank tubers collected from the major production areas in Alberta. An increase in the ratio of citric to chlorogenic acid content is known to be associated with a decrease in the tendency for potato tubers to darken after cooking. Tuber citric acid and potassium contents were higher in southerly locations than in central locations. The trend for citric acid is the reverse of that for chlorogenic acid established in a previous study. Thus, potatoes grown at southern Alberta locations have a higher citric to chlorogenic acid ratio than those grown in central locations, suggesting that they would be less subject to after-cooking darkening.Key words: Darkening (after-cooking), citric acid, chlorogenic acid, potassium content, Russet Burbank, potato


1966 ◽  
Vol 41 (8) ◽  
pp. 1350-1359 ◽  
Author(s):  
A. O. Taylor ◽  
Milton Zucker

2017 ◽  
Vol 229 ◽  
pp. 837-846 ◽  
Author(s):  
Matías Ariel Valiñas ◽  
María Luciana Lanteri ◽  
Arjen ten Have ◽  
Adriana Balbina Andreu

2007 ◽  
Vol 55 (26) ◽  
pp. 10839-10849 ◽  
Author(s):  
Christelle M. Andre ◽  
Mouhssin Oufir ◽  
Cédric Guignard ◽  
Lucien Hoffmann ◽  
Jean-François Hausman ◽  
...  

Agriculture ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 21
Author(s):  
Dorota Wichrowska

The aim of the study was to assess the interactive effect of the use of bio-fertilizer and organic matter brought into the soil, as well as to limit the use of mineral fertilization on the content of bioactive compounds in potato tubers cultivar ‘Satina’. The test results show a positive effect of the applied bio-fertilizer in all tested variants of organic fertilization (straw, fodder pea, manure) on the level of the tested compounds. Comparing the content of crude protein in tubers from plots where half the dose of mineral fertilization was applied, the use of bio-fertilizer increased the content of this component, especially after using straw. After 6 months of storage, organic fertilization had no significant effect on the protein content, while significant differences were found in tubers fertilized with mineral, in favor of the full dose of NPK fertilizers. The storage time increased the content of tyrosine, leucine, lysine, alanine, glutamic acid, and total AA, and also methionine, aspartic acid, and asparagine, while the content of isoleucine and phenyl-alanine decreased. The highest content of total polyphenols was found in tubers where the plots were covered with pea application, a full dose of mineral fertilizer, and the use of bio-fertilizer. Unfortunately, after 6 months of storage, potato tubers from plots fertilized with peas, especially those fertilized with half the dose of mineral fertilization and without the use of biofertilizer, significantly lost the most total polyphenols. Similar relationships were obtained for the level of chlorogenic acid in tubers, which is significantly correlated with the content of polyphenols, but only organic fertilization in the form of peas significantly increased the concentration of chlorogenic acid. On the other hand, the highest post-harvest antioxidant activity was characteristic of tubers from plots fertilized with manure, with a full dose of mineral fertilization and biofertilizer. During the 6-month storage, there was a decrease in the antioxidant capacity, on average 12.4% for the objects. This may indicate the influence of polyphenolic compounds as well as other antioxidants on the assessed trait.


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