It is known about 500 Aloe species exist worldwide from diminutive
shrubs to large tree-like forms, showing a large biodiversity and
of economic importance (Grace, 2011), but little research has been
done on Aloe spp. apart from A. vera, which is known due to therapeutic
properties of its gel and an impact on human health (Eshun
and He, 2004; Saritha et al., 2010).