Selective pressurized hot water extraction of nutritious macro-nutrients vs. micro-nutrients in Moringa oleifera leaves—a chemometric approach

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Bibtex

@article{69aed3c8faf04b96bb212a27eaf77c0b,
title = "Selective pressurized hot water extraction of nutritious macro-nutrients vs. micro-nutrients in Moringa oleifera leaves—a chemometric approach",
abstract = "Moringa oleifera leaves are widely used in traditional medicine as a food supplement because they are high in essential and nutritious content. Pressurized hot water extraction (PHWE), which is a green approach, was used for the recovery of the macro-nutrient and micro-nutrient elements from dried leaf powder of Moringa oleifera. In this study, response surface methodology was applied to assess the influence of temperature (50–200 °C) and time (5–60 min) on the extractability pattern of macro-nutrient and micro-nutrient elements from the leaves of Moringa oleifera when processed by PHWE. The quantification of macro-nutrient elements such as Ca, K and Mg and micro-nutrient elements like Al, Co, Cr, Cu, Fe, Ni and Zn from the leaves was determined using inductively coupled plasma optical emission spectroscopy (ICP-OES). Obtained results revealed that the extraction of macro-nutrient elements from the Moringa oleifera leaves was enhanced by increasing the extraction time more than the extraction temperature. On the contrary, the amounts of extractable micro-nutrient elements were increased by increasing the extraction temperature. Hence, the recovery for macro-nutrient elements ranged from 88 to 98{\%} while for micro-nutrients it ranged from 21 to 46{\%}. This implies that macro-nutrient elements are extracted with relatively high selectivity in relation to micro-nutrient elements in Moringa dried leaf powder using the PHWE technique.",
keywords = "Macro-nutrient and micro-nutrient elements, Moringa oleifera, Pressurized hot water extraction, Response surface",
author = "Yannick Nuapia and Said Al-Hamimi and Matshediso, {Phatsimo G.} and Ewa Cukrowska and Hlanganani Tutu and Charlotta Turner and Luke Chimuka",
year = "2020",
doi = "10.1007/s00216-020-02472-4",
language = "English",
journal = "Analytical and Bioanalytical Chemistry",
issn = "1618-2642",
publisher = "Springer",

}