Menaquinone-7 can be produced by synthesis or fermentation and its purity profile can differ depending on methodologies and extraction procedures. Menaquinone-7 is a member of the vitamin K family whose interest has considerably increased over the last decade due to its beneficial role in human health mainly in respect to bone and cardiovascular health leading to a growing use in different nutritional supplement. The physicochemical properties confirmed edibility and good quality of oils and fats present in the aforementioned Amazonian fruits. It was observed that the oils have predominately ω9 fatty acids, followed by ω6 and ω3 representatives. Unsaturated fatty acids oleic (ω9), linoleic (ω6) and linolenic (ω3) acids were quantified in the oils and their physicochemical properties were determined.
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After solvent removal by rotoevaporation, the resulting oils and fats were analyzed by 1H NMR spectroscopy. Oils were obtained by Soxhlet extraction using hexane as a solvent. The objectives of this work were to use 1H NMR to determine the fatty acids profile and the physicochemical properties of crude oils and fats obtained from fruits of Brazilian Amazon: açaí, ata-brava, bacaba, buriti, buritirana, murici amarelo, murici vermelho, piaçaba braba, tucumanzinho, pupunha red and yellow varieties.
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1 H Magnetic Resonance Nuclear ( 1H NMR) is a robust spectroscopic tool to profile fatty acids components in oils. Althoung there is a global interest in the nutritional potential of tropical fruits, the potential of Amazonian fruits as source of essential fatty acids is still under exploited, since their composition is still understudied. Native plants from the Brazilian Amazon Biome are rich in nutrientes, oils and fats and, therefore, represent a very important regional food resource.