Effect of nitrogen fertilization on caffeine production in coffee (Coffea arabica)

Gonthier, David J.; Witter, Jason D.; Spongberg, Alison L.; Philpott, Stacy M.

doi:10.1007/s00049-011-0073-7

Cited by 18 publications

(16 citation statements)

References 27 publications

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“…Its concentration in coffee beans depends exactly on the nitrogen fertilization used in cultivation as well as the phloem nitrogen concentration. Coffee plants with high levels of nitrogen fertilization produced coffee beans with high caffeine concentrations [21]. Organic coffee plants are cultivated without easily available nitrogen fertilizers.…”

Section: Resultsmentioning

confidence: 99%

The Antioxidant Content of Coffee and Its In Vitro Activity as an Effect of Its Production Method and Roasting and Brewing Time

Górecki

Hallmann

2020

Antioxidants

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Coffee is one of the most popular beverages in the world. The high production and health properties of coffee make it one of the best among daily drinks. Coffee is wrongly identified as only a stimulant because of its caffeine content. On the other hand, coffee is one of the best sources of other bioactive compounds, such as flavonoids and phenolic acids. Organic coffee is produced without artificial fertilizers and pesticides. Not only the high quality of beans but also roasting and brewing times guarantee the best taste and quality of coffee beverages. The aim of the present experiment was to determine the best level of roasting and brewing time for organic and conventional coffee. The experiment was carried out with Peru coffee beans from organic and conventional farms. The contents of caffeine and bioactive compounds were measured in different roasted and brewed coffee drinks. The obtained results showed that the conventional coffee contained significantly more caffeine, total flavonoids, and quercetin derivatives than the organic coffee. On the other hand, the organic coffee was characterized by a higher level of almost all bioactive compounds. The best level of roasting was determined to be medium, and the optimal brewing time was 3 minutes.

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Section: Resultsmentioning

confidence: 99%

The Antioxidant Content of Coffee and Its In Vitro Activity as an Effect of Its Production Method and Roasting and Brewing Time

Górecki

Hallmann

2020

Antioxidants

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“…changes in sugar, amino acid or secondary compound content, Petanidou et al 1999, Gardener and Gillman 2001, Gonthier et al 2011, which can affect visitation or oviposition patterns (Chen et al 2008). changes in sugar, amino acid or secondary compound content, Petanidou et al 1999, Gardener and Gillman 2001, Gonthier et al 2011, which can affect visitation or oviposition patterns (Chen et al 2008).…”

Section: Effect Of Resource Preferences On Historical Patterns Of Biomentioning

confidence: 99%

“…Increased availability of nitrogen can change the quality of floral resources (e.g. changes in sugar, amino acid or secondary compound content, Petanidou et al 1999, Gardener and Gillman 2001, Gonthier et al 2011, which can affect visitation or oviposition patterns (Chen et al 2008). Further studies testing if such changes in resource quality are more accentuated for plant species capable of using the excess nitrogen (i.e.…”

Section: Effect Of Resource Preferences On Historical Patterns Of Biomentioning

confidence: 99%

Soil eutrophication shaped the composition of pollinator assemblages during the past century

et al. 2019

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Atmospheric nitrogen deposition and other sources of environmental eutrophication have increased substantially over the past century worldwide, notwithstanding the recent declining trends in Europe. Despite the recognized susceptibility of plants to eutrophication, few studies evaluated how impacts propagate to consumers, such as pollinators. Here we aim to test if soil eutrophication contributes to the temporal dynamics of pollinators and their larval resources.We used a temporally and spatially explicit historical dataset with information on species occurrences to test if soil eutrophication, and more specifically nitrogen deposition, contributes to the patterns of change of plant and pollinator richness in the Netherlands over an 80 yr period. We focus on bees and butterflies, two groups for which we have good knowledge of larval resources that allowed us to define groups of species with different nitrogen related diet preferences. For each group we estimated richness changes between different 20-yr periods at local, regional and national scale, using analytical methods developed for analyzing richness changes based on collection data.Our findings suggest that the impacts of soil eutrophication on plant communities propagate to higher trophic levels, but with a time-lag. Pollinators with nitrogenrelated diet preferences were particularly affected, in turn potentially impairing the performance of pollinator-dependent plants. Pollinator declines continued even after their focal plants started to recover. In addition, our results suggest that current levels Research 210 of nitrogen deposition still have a negative impact on most groups here analyzed, constraining richness recoveries and accentuating declines.Our results indicate that the global increase in nitrogen availability plays an important role in the ongoing pollinator decline. Consequently, species tolerances to soil nitrogen levels should be considered across all trophic levels in management plans that aim to halt biodiversity loss and enhance ecosystems services worldwide.

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“…Selain itu, unsur K juga berperan dalam reproduksi tanaman kopi, terutama pada hasil dan ukuran biji (Clemente et al, 2013), menentukan kualitas citarasa dengan mengaktifkan enzim polifenol oksidase serta menentukan kandungan kafein dan fenol dalam biji kopi (Gonthier, Witter, Spongberg, & Philpott, 2011;Clemente et al, 2013;Mancuso, Soratto, Crusciol, & Castro, 2014;Clemente, Martinez, Alves, Finger, & Cecon, 2015).…”

Section: Korelasi Ketinggian Tempat Dengan Sifat Kimia Tanahunclassified

Korelasi Antara Ketinggian Tempat, Sifat Kimia Tanah, dan Mutu Fisik Biji Kopi Arabika di Dataran Tinggi Garut

Supriadi

Randriani

Towaha

2016

J. Tanaman Industri dan Penyegar

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ABSTRAKKetinggian tempat mempengaruhi unsur-unsur iklim yang akan berdampak terhadap sifat kimia tanah. Pertumbuhan, produktivitas, mutu, dan citarasa kopi ditentukan oleh beberapa faktor, salah satunya sifat kimia tanah. Tujuan penelitian adalah menganalisis korelasi antara ketinggian tempat, sifat kimia tanah, dan mutu fisik biji kopi Arabika di dataran tinggi Kabupaten Garut. Penelitian dilakukan di dataran tinggi Kabupaten Garut, Provinsi Jawa Barat, mulai bulan April sampai Agustus 2014. Penelitian menggunakan metode survei dengan pemilihan lokasi dan ketinggian tempat secara purposive serta pengambilan sampel tanah dan biji kopi secara acak di masing-masing lokasi. Parameter yang diamati adalah sifat kimia tanah, persentase biji normal, dan berat biji kopi Arabika pada ketinggian tempat 1.000-1.600 m dpl. Data dianalisis menggunakan korelasi. Hasil penelitian menunjukkan korelasi yang nyata antara ketinggian tempat dengan beberapa sifat kimia tanah dan mutu fisik biji kopi Arabika di dataran tinggi Garut. Semakin tinggi tempat maka semakin meningkat pula sifat kimia tanah seperti pH, C-organik, N-total, Na, dan KTK, tetapi sebaliknya untuk P 2 O 5 total. Meningkatnya tinggi tempat dan beberapa sifat kimia tanah tersebut seiring dengan meningkatnya pula persentase biji normal dan berat 100 biji kopi Arabika.

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Effect of nitrogen fertilization on caffeine production in coffee (Coffea arabica)

Cited by 18 publications

References 27 publications

The Antioxidant Content of Coffee and Its In Vitro Activity as an Effect of Its Production Method and Roasting and Brewing Time

The Antioxidant Content of Coffee and Its In Vitro Activity as an Effect of Its Production Method and Roasting and Brewing Time

Soil eutrophication shaped the composition of pollinator assemblages during the past century

Korelasi Antara Ketinggian Tempat, Sifat Kimia Tanah, dan Mutu Fisik Biji Kopi Arabika di Dataran Tinggi Garut

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