@article {242605,
	title = {Phytochemical constituents and anti-tyrosinase activity of  leaves extract.},
	journal = {Natural product research},
	volume = {36},
	year = {2022},
	pages = {1089-1094},
	abstract = {<p> Maiden \&amp; Betche is cultivated around the world for its highly valued nuts (macadamia nuts). Although the chemical composition of the edible macadamia oil has been repeatedly investigated, other plant organs have not been phytochemically or biologically assessed. In this study, ethanolic extract of  leaves was phytochemically investigated which led to the isolation of 6 compounds. Two functional galactolipids,  monogalactosyl diacylglycrol 36:4 (MGDG 36:4), digalactosyl monoacylglycerol 18:2 (DGMG 18:2), gallic acid and protocatechuic acid were identified in the genus  for the first time, in addition to the cyanogenic glycoside dhurrin and -sitosterol. Additionally, anti-tyrosinase activity of the extract, its fractions and isolated compounds was investigated and a good tyrosinase inhibitory activity was observed for the extract, IC=85 {\textmu}g/mL and its polar fractions (ethyl acetate at 60 {\textmu}g/mL and -butanol at 75 {\textmu}g/mL), with gallic acid showing strong anti-tyrosinase activity at IC 56 {\textmu}g/mL.</p>
},
	author = {Seham S ElHawary and Abubaker, Mohammed and Abd El-Kader, Essam M. and Mahrous, Engy A}
}
