By Fascinadora / Getty Images People usually tend to throw out rinds from lemons and other citrus fruits (unless grating the zest into a cake). In order to make better use of this food waste, a Spanish research laboratory is currently developing a technique to extract certain compounds whose thickening and stabilizing functions could replace certain currently used food additives. People usually tend to throw out rinds from lemons and other citrus fruits (unless grating the zest into a cake). In order to make better use of this food waste, a Spanish research laboratory is currently developing a…