New Information of the Anatomy and Phytochemical Screening of Pentaclethra macroloba (Willd.) Kuntze (Caesalpinioideae-Leguminosae) Seeds

Table 2

Results of histochemical tests performed on Pentaclethra macroloba seeds.

Reagent	Seed structure
	Metabolites	Integument	Cotyledon mesophyll	Embryonic axis	Secretory cavities	Idioblasts
Dragendorff	Alkaloids	+	+	+	-	+
Lugol	Starch	+	+	+	-	-
Iron chloride	Phenolics compounds	+	+	+	+	+
Ruthenium red	Pectin	+	+	+	-	-
Hydrochloric acid	Calcium oxalate crystals	n	n	+	n	+
Acid phloroglucinol	Lignins	+	n	n	n	n
Nile blue A	Acid lipids	+	+	+	-	+
Sudan III Sudan black	Total lipids	+	+	+	+	+
Toluidine blue	Acidic mucilage	+	+	+	-	+
PAS	Neutral polysaccharides	+	+	+	-	-
Xylidine ponceau	Total proteins	+	+	+	-	-
Vanillin-hydrochloric acid	Tannin	+	-	-	-	+
Nadi	Terpenes	+	+	+	+	+

Note: n: not applied; +: positive reaction; -; negative reaction.