Therefore, the feedstock for biodiesel should come from a
diversified oil sources, either edible or non-edible depending on
geographical locations. An ideal solution would be an equal share
contributed by edible oil and non-edible oil. Fertile agricultural
land should remain for edible oil cultivation while wasteland or
fallow land should be planted with non-edible oil crops such as
castor, jatropha and P. pinnata that has simpler ecological
requirements. This will allow optimum utilization of limited land
areas especially in developed countries. Diversified resources for
biodiesel feedstock will also ensure that the quality of biodiesel
obtained is suitable within that particular region. For example,
biodiesel produced from palm oil has poor cold flow properties
and is therefore not suitable for cold weather countries; however,
it can be used as a very good feedstock for hot weather countries
such as in the South East Asia, India, Brazil and South America
countries. On the other hand, biodiesel with good cold flow
properties produced from rapeseed oil, jatropha and castor can be
specifically used in cold weather countries especially North
America and European countries.