Thermal behavior of calafate (Berberis buxifolia) seeds

Martín-Ramos, Pablo; Martín‐Gil, Jesús; Ramos-Sánchez, María del Carmen; Hernández-Navarro, Salvador; Martín-Gil, F.J.

doi:10.4067/s0717-92002016000300019

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…It can be observed that they are closely related, in particular those of Salvia hispanica and Nigella sativa species. The relationship with the spectra of calafate (Berberis buxifolia L.) 26 and rosehip (Rosa rubiginosa L.) 27 seeds, also included in Table 2 for comparison purposes, is also very high. The highest absorbance for the three spectra occurred at 1022 cm -1 .…”

Section: Vibrational Characterizationmentioning

confidence: 86%

Vibrational Analysis and Thermal Behavior of Salvia hispanica, Nigella sativa and Papaver somniferum Seeds

Carrión-Prieto¹,

Martín-Ramos²,

Hernández-Navarro³

et al. 2017

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Introduction: Salvia hispanica L., Nigella sativa L. and Papaver somniferum L. are involved in opiate-dependent behavior. It is known that the seeds of these three herbs contain high amounts of antioxidants, which are helpful in disease prevention, but further research is needed on some of their other phytochemical components (terpene alkaloids, benzoquinones and others), which are claimed to affect human opioid receptors. Methods: Seeds from the three afore mentioned plants have been studied by ATR-FTIR vibrational spectroscopy and thermo analytical techniques (TG/DTG, DTA and DSC). Results: The infrared spectrum has confirmed the presence of the ester carbonyl of terpenoid alkaloids (such as nigellamine) and the fully conjugated cyclic dione structure of quinones (e.g., thymoquinone). As regards the thermal stability of these seeds, small differences have been observed in their thermal profiles (endothermic effects at around 333ºC for chia, 268ºC for black cumin and 319ºC for poppy seeds), which can be ascribed to their different content in carbohydrates. Conclusions: The functional groups of the main active constituents and the thermal behavior of these three seeds have been elucidated.

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Section: Vibrational Characterizationmentioning

confidence: 86%

Vibrational Analysis and Thermal Behavior of Salvia hispanica, Nigella sativa and Papaver somniferum Seeds

Carrión-Prieto¹,

Martín-Ramos²,

Hernández-Navarro³

et al. 2017

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“…The main endotherm at 109°C corresponds to dehydration and protein denaturation. The second endotherm, with a peak at 209°C, can be attributed to melting of the carbohydrates and other components [16][17][18]. The enthalpy of these effects was found to be 174.4 and 36.17 J/g, respectively.…”

Section: Abrus Precatorius L Seedsmentioning

confidence: 99%

Chemical Composition of Abrus precatorius L. Seeds

Chakradhari

Patel

Towett

et al. 2019

EJMP

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Aims: A. precatorius seed powder is traditionally used in Ayurveda, Siddha and Unani medicine. The objective of present work is to describe the oil, starch, protein, polyphenol and mineral composition of A. precatorius seeds. Methodology: Legumes from A. precatorius were collected, and seeds were manually separated. Dried seeds in powder form were employed for the various analyses: solvent extraction was used for elucidation of the oil percentage value; starch content was determined by the enzymatic method; total polyphenol and flavonoid contents were spectrophotometrically analyzed using Folin-Ciocalteu and aluminum chloride as the color developing reagents, respectively; and X-ray fluorescence (XRF) was used for the mineral contents assessment. Results: The seed kernel consisted of stored oil (3.2%), protein (92.0%) and starch (4.8%). The total polyphenol and flavonoid contents were 24710 and 2520 mg/kg (dw). A remarkably high content of polyphenols was observed in the seed coat and the seed pod. P, S and (mainly) K nutrients were hyper-accumulated in the seed kernel. The seeds showed a glass transition at -21°C, two endothermic peaks at 109°C (dehydration and protein unfolding) and at 209°C, and a calorific value (~406 kcal/100 g dw) that exceeded those of Pisum sativum L., Lens culinaris Medik. and other common pulses. Conclusions: The seed kernel from A. precatorius was mainly composed of stored protein, with low oil and starch contents. High contents of polyphenols, K, Mg, Ca and Fe were found in the seeds. Heavy metals were below the safety limits established for human consumption.

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“…La primera experiencia de radicalización estudiantil la encontraremos desde diciembre de 1966 y, especialmente, durante los primeros meses de 1967, cuando, finalmente, prácticamente la totalidad del comité de estudiantes del PSUC -el partido que hasta el momento había actuado como dirigente del movimiento universitario-abandonará el partido con la escisión del grupo «unidad» (posteriormente formarán el PCE(i)). 70 Esta escisión, por lo que se refiere a los estudiantes encontrará entre sus causas la diferente lectura que el grupo escindido y la dirección del partido hacían de la situación tanto nacional como universitaria. Y, aunque no tendrá un gran impacto a nivel cuantitativo, marcará el fin de la hegemonía del PSUC en el movimiento universitario y tendrá una clara influencia en la radicalización del resto de grupos, introduciendo en la universidad los principales debates ideológicos que se están produciendo en el movimiento comunista internacional.…”

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‘Nuestro 68 fue el 66’. El movimiento estudiantil de Barcelona en el marco global de los sesentayochos (1965-1969)

Sancho Galán

2024

HDP

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Thermal behavior of calafate (Berberis buxifolia) seeds

Abstract: Thermal behavior of calafate (Berberis buxifolia) seedsComportamiento térmico de las semillas de calafate (Berberis buxifolia

Cited by 6 publications

References 11 publications

Vibrational Analysis and Thermal Behavior of Salvia hispanica, Nigella sativa and Papaver somniferum Seeds

Vibrational Analysis and Thermal Behavior of Salvia hispanica, Nigella sativa and Papaver somniferum Seeds

Chemical Composition of Abrus precatorius L. Seeds

‘Nuestro 68 fue el 66’. El movimiento estudiantil de Barcelona en el marco global de los sesentayochos (1965-1969)

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