Vol. 103, No. 4 (Dec 2020)
One of the most popular studies of coffee is in its aroma, together with its fatty acid content. The aroma of the coffee is composed of so many volatile compounds (Mondello, 2005). In this paper, the composition of volatile compounds of different varieties of coffee were analyzed using Headspace-Gas Chromatography-Mass Spectrometry. Data comparisons were made to determine the differences in the aroma profiles of each sample based on variety and roasting degree.
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Articles
Profiling of the Volatile Compounds of the Different Local Coffee Cultivars through Headspace – Gas Chromatography – Mass Spectrometry [RESEARCH NOTE]
Kevinilo P. Marquez and Ruel M. Mojica
The study sought to provide the data necessary for the identification, authentication, and quality analysis of coffee products cultivated locally. Four varieties of locally cultivated coffee beans (Arabica, Robusta, Excelsa, and Liberica) were analyzed for their respective aroma profiles using Headspace - Gas Chromatography - Mass Spectrometry. For the aroma profiles, a total of 66 compounds were detected across varieties and roasting degrees based on the National Institute of Standards and Technology (NIST) Library Search Engine. An 85% mass spectral profile match percentage served as the main criteria. The aroma profiles were analyzed to differentiate the varieties and their respective ...
The study sought to provide the data necessary for the identification, authentication, and quality analysis of coffee products cultivated locally. Four varieties of locally cultivated coffee beans (Arabica, Robusta, Excelsa, and Liberica) were analyzed for their respective aroma profiles using Headspace - Gas Chromatography - Mass Spectrometry. For the aroma profiles, a total of 66 compounds were detected across varieties and roasting degrees based on the National Institute of Standards and T...
SSR Analysis of Coffea liberica var. liberica and Coffea liberica var. dewevrei in the Philippines [RESEARCH NOTE]
Daisy May C. Santos and Ernelea P. Cao
In the Philippines, four coffee varieties (Arabica, Robusta, Liberica and Excelsa) are cultivated for commercial consumption. While Arabica and Robusta varieties are well-known globally, Liberica or Kapeng Barako is being developed as Philippine specialty coffee. Liberica and Excelsa are more similar in morphology compared to Arabica and Robusta since they are varieties of the same species, Coffea liberica W. Bull ex Hiern. In this study, 20 SSR markers were amplified for C. liberica specimens representing both Liberica and Excelsa varieties in the Philippines. While the SSR markers exhibited high polymorphism, between-site variation was much greater compared to between-variety. The neigh...
In the Philippines, four coffee varieties (Arabica, Robusta, Liberica and Excelsa) are cultivated for commercial consumption. While Arabica and Robusta varieties are well-known globally, Liberica or Kapeng Barako is being developed as Philippine specialty coffee. Liberica and Excelsa are more similar in morphology compared to Arabica and Robusta since they are varieties of the same species, Coffea liberica W. Bull ex Hiern. In this study, 20 SSR markers were amplified for C. liberica specimen...
Cytogenetic Analysis of Eggplant (𝘚𝘰𝘭𝘢𝘯𝘶𝘮 𝘮𝘦𝘭𝘰𝘯𝘨𝘦𝘯𝘢 𝘓.) and Some of Its Wild Relatives Found in the Philippines [RESEARCH NOTE]
Khris June L. Callano
Cytogenetics is known to offer relevant information useful in understanding phylogenetic relationships, genetic mapping and plant breeding studies. In particular, the knowledge of meiotic chromosomal behavior is highly vital in working out pathways for transferring desirable traits from related species to cultivated ones. Cytogenetic characterization of Solanum aethiopicum, S. americanum, S. hirtellum, S. mammosum, S. melongena, S. pseudocapsicum and S. torvum was done using iron-acetocarmine squash technique. S. aethiopicum, S. americanum, S. hirtellum, S. melongena, S. pseudocapsicum and S. torvum were found to be diploid species with chromosome number 2n=24 while S. mammosum had a chro...
Cytogenetics is known to offer relevant information useful in understanding phylogenetic relationships, genetic mapping and plant breeding studies. In particular, the knowledge of meiotic chromosomal behavior is highly vital in working out pathways for transferring desirable traits from related species to cultivated ones. Cytogenetic characterization of Solanum aethiopicum, S. americanum, S. hirtellum, S. mammosum, S. melongena, S. pseudocapsicum and S. torvum was done using iron-acetocarmine...
