|List of Malaysian dishes (Photo credit: Wikipedia)|
Chlorophyll is a dietary source of magnesium that comes out when it gets decomposed. If chlorophyll is reacted with a base, it forms a series of phyllins, magnesium porphyrin compounds. Treatment of phyllins with acid gives porphyrins.
In addition, the other one of reaction product is chlorophyllin being a semi-synthetic mixture of sodium copper salts. Chlorophyllin is a water-soluble salt obtained by alkaline Chlorophyll; and chlorophyllin can form complexes with certain chemicals like aflatoxin-B1 found in powders and extracts of many spices, herbs and higher plants that can cause cancer; or bind to some heterocyclic amines found in cooked meat, or polycyclic aromatic hydrocarbons found in tobacco smoke.
The formations of these complex structures may interfere with gastrointestinal absorption of potential carcinogens, and the amounts of carcinogenic substances in susceptible tissues may be reduced.
However, when meals are served at funeral wakes, the leaf is folded outwards as a sign of condolence to the family of the deceased. Due to this, folding the leaf outwards is considered rude in any other circumstance.
In Malaysia, some Malaysians of non-Indian origin sometimes fold their banana leaf outward as a sign of dissatisfaction with an eatery's banana leaf meal. This is due to the erroneous belief that folding the leaf inwards or outwards is a way of rating the meal.
So, it can be said without any hesitation that our ancestors have experimented and found out the beneficial effects of taking food served hot on banana leaves.