Genotype and Season Influence Chlorogenic Acid Content in Douglas-fir Foliage

1975 ◽  
Vol 5 (2) ◽  
pp. 281-284 ◽  
Author(s):  
M. A. Radwan
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Positive Association ◽  
Age Effect ◽  
Douglas Fir ◽  
Genotypic Differences ◽  
Average Content ◽  
Sample Collection ◽  
Deer Browsing

Chlorogenic acid content was determined in foliage of six grafted clones and seven F1 full-sib progenies at three different times during 1971. Detectable amounts of the compound were found in all foliage tissues examined, but levels varied among clones, among progenies, and by season of sample collection. Chlorogenic acid levels in the progeny appeared to be inherited and influenced by both parents. However, average content was substantially higher in the parents than in progenies, reflecting a possible age effect. Results corroborate previous findings with respect to genotypic differences of chlorogenic acid in Douglas-fir foliage and its positive association with susceptibility to deer browsing.

Differences Between Douglas-fir Genotypes in Relation to Browsing Preference by Black-tailed Deer

1972 ◽  
Vol 2 (3) ◽  
pp. 250-255 ◽  
Author(s):  
M. A. Radwan
Keyword(s):  
Essential Oils ◽  
Chlorogenic Acid ◽  
Acid Content ◽  
Inhibitory Action ◽  
Dry Matter ◽  
Chemical Constituents ◽  
Douglas Fir ◽  
Total Phenols ◽  
Deer Browsing ◽  
Dormant Season

Tissue digestibility, essential oils, and levels of several chemical constituents were compared in foliage of Douglas-fir. Genotypes with different susceptibilities to deer browsing were used, and foliage was collected during the dormant season. In general, clones resistant to deer browsing had lower dry-matter and cellulose digestibilities, essential oils with greater inhibitory action on rumen microbial activity, higher content of fats, total phenols, flavanols, and leucoanthocyanins, and lower levels of chlorogenic acid. Results suggest that these resistance characteristics, especially the chlorogenic acid content, might be used instead of conventional bioassays with captive deer, to screen Douglas-fir breeding stock for resistance to deer browsing.

CHLOROGENIC ACID CONTENT OF SUNFLOWER SEED FLOUR AS AFFECTED BY SEEDING AND HARVEST DATE

1976 ◽  
Vol 56 (4) ◽  
pp. 901-905 ◽  
Author(s):  
D. G. DORRELL
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Vegetative Growth ◽  
Sunflower Seed ◽  
Growing Season ◽  
Growing Degree Days ◽  
Degree Days ◽  
Normal Field ◽  
Seed Flour ◽  
Seeding Date

The effect of seeding date on the chlorogenic acid content of sunflower seed flour was determined by seeding the cultivars Krasnodarets and Peredovik at seven dates, starting on 14 May, over 3 yr. Sequential plantings were made at increments of approximately 70 growing degree days (base = 5.6 C). Plants were harvested at normal field maturity. The time and rate of deposition of chlorogenic acid was determined by harvesting plants at 7-day intervals from 21 to 49 days after flowering. The seeds were dehulled and defatted before determining the chlorogenic acid content of the flour. Chlorogenic acid content declined steadily from an average of 4.22% for the first seeding to 3.30% for the last seeding. About one-half of the total chlorogenic acid was present 21 days after flowering. Deposition continued rapidly for the next 14 days then the level began to stabilize. Delay in seeding tended to shorten the period of vegetative growth and shift the deposition of chlorogenic acid to a cooler portion of the growing season. It is suggested that a combination of these factors caused the reduction in chlorogenic acid content of sunflower flour.

scholarly journals Differences between the Leaf Mycobiome of Coffea arabica and Wild Coffee Species and Their Modulation by Caffeine/Chlorogenic Acid Content

2021 ◽  
Vol 9 (11) ◽  
pp. 2296
Author(s):  
Leandro Pio de Sousa ◽  
Oliveiro Guerreiro Filho ◽  
Jorge Maurício Costa Mondego
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Information Seeking ◽  
Coffea Arabica ◽  
Pathogen Resistance ◽  
Quantitative Information ◽  
Fungal Species ◽  
Its Sequencing ◽  
Wild Coffee ◽  
The Relationship

The study of microbes associated with the coffee tree has been gaining strength in recent years. In this work, we compared the leaf mycobiome of the traditional crop Coffea arabica with wild species Coffea racemosa and Coffea stenophylla using ITS sequencing for qualitative information and real-time PCR for quantitative information, seeking to relate the mycobiomes with the content of caffeine and chlorogenic acid in leaves. Dothideomycetes, Wallemiomycetes, and Tremellomycetes are the dominant classes of fungi. The core leaf mycobiome among the three Coffea species is formed by Hannaella, Cladosporium, Cryptococcus, Erythrobasidium, and Alternaria. A network analysis showed that Phoma, an important C. arabica pathogen, is negatively related to six fungal species present in C. racemosa and C. stenophylla and absent in C. arabica. Finally, C. arabica have more than 35 times the concentration of caffeine and 2.5 times the concentration of chlorogenic acid than C. stenophylla and C. racemosa. The relationship between caffeine/chlorogenic acid content, the leaf mycobiome, and genotype pathogen resistance is discussed.

scholarly journals Morphology, Anatomy, Chlorogenic Acid Content and Antioxidant Capacity of Xanthium strumarium L. and Xanthium spinosum L.

2018 ◽  
Vol 18 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Dinara Abdikhaliyevna Aldibekova ◽  
Murat Kizaibek ◽  
Mahaya Aisijiang ◽  
Gulzhamal Dyuskaliyeva ◽  
Angsar Taldau ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Chlorogenic Acid ◽  
Acid Content ◽  
Xanthium Strumarium

scholarly journals Chlorogenic acid content in potato tubers with colored flesh as affected by a genotype, location and long-term storage

2019 ◽  
Vol 65 (No. 7) ◽  
pp. 355-360
Author(s):  
Matyáš Orsák ◽  
Karel Hamouz ◽  
Jaromír Lachman ◽  
Pavel Kasal
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Field Experiments ◽  
The Other ◽  
Potato Tubers ◽  
Flesh Color ◽  
Long Term Storage ◽  
And Storage ◽  
Term Storage

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).

Effect of latitude on narrow-leaved purple coneflower (Echinacea angustifolia DC.) yield and phytochemical quality

2020 ◽  
Vol 100 (1) ◽  
pp. 103-112
Author(s):  
Ian R. Willick ◽  
Branka Barl ◽  
Karen K. Tanino
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Western Canada ◽  
Root Yield ◽  
Field Site ◽  
Echinacea Angustifolia ◽  
Phytochemical Content ◽  
Purple Coneflower ◽  
Cash Crops ◽  
Northern Latitudes

The worldwide increase in demand for plant-derived drugs has increased interest in medicinal plants as alternative cash crops across western Canada. The objective of this research was to determine if the Northern Vigor® phenomenon, expressed as a combination of elevated crop yield and phytomedicinal quality in crops grown in northern latitudes, exists in narrow-leaved purple coneflower (Echinacea angustifolia DC.). In a 2-yr study, narrow-leaved purple coneflower was grown in three field sites in Saskatchewan, Canada (SK; Saskatoon, La Ronge, and Outlook) and one field site in Oregon, United States (Madras), to test the effects of latitude on root yield, phenolic, and alkylamide phytochemical markers. Roots harvested in 1999 (all three SK sites) and 2000 (two SK sites) had higher root biomass compared with roots harvested in Oregon. Root echinacoside and cynarin content were significantly higher in both years in the three Saskatchewan sites compared with Madras, whereas root chlorogenic acid content and total alkylamides were significantly higher in all three Saskatchewan sites in 1999. In 2000, root chlorogenic acid content and total alkylamides were higher in two of the three Saskatchewan sites compared with Madras. While Aster Yellows were prevalent in Echinacea in Saskatchewan, this disease did not significantly decrease root yield phenolic or phytochemical content. These data suggest that Saskatchewan has a competitive advantage in producing premium-quality narrow-leaved purple coneflower root in North America.

CHLOROGENIC ACID CONTENT VARIATION IN ARTICHOKE PLANT PARTS AND PHYSIOLOGICAL STAGES

2012 ◽  
pp. 469-472 ◽  
Author(s):  
D. Negro ◽  
S. Grieco ◽  
A. De Lisi ◽  
G. Sarli ◽  
G. Sonnante
Keyword(s):  
Chlorogenic Acid ◽  
Acid Content ◽  
Plant Parts ◽  
Content Variation

CITRIC ACID AND POTASSIUM CONTENTS OF RUSSET BURBANK POTATO IN ALBERTA

1985 ◽  
Vol 65 (3) ◽  
pp. 793-795 ◽  
Author(s):  
D. R. LYNCH ◽  
M. S. KALDY
Keyword(s):  
Citric Acid ◽  
Chlorogenic Acid ◽  
Acid Content ◽  
Russet Burbank Potato ◽  
Russet Burbank ◽  
Potassium Content ◽  
Potato Tubers ◽  
Acid Ratio ◽  
Southern Alberta ◽  
Production Areas

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

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