A Critical Review of Croton as a Multipurpose Nonedible Tree Plant for Biodiesel Production towards Feedstock Diversification for Sustainable Energy

Table 1

Primary feedstocks for biodiesel production [19].

Edible oils	Nonedible oils	Animal’s fats	Other sources
Barley	Abutilon muticum	Beef tallow	Cyanobacteria
Canola	Aleurites moluccana	Chicken fat	Bacteria
Coconut	Camelina (Camelina sativa)	Fish oil	Cooking oil
Corn	Coffee ground (Coffea arabica)	Pork lard	Fungi
Groundnut	Cottonseed (Gossypium hirsutum)	Poultry fat	Latexes
Palm and palm kernel (Elaeis guineensis)	Croton megalocarpus	Waste salmon	Microalgae (Chlorella vulgaris)
Peanut	Cynara cardunculus		Miscanthus
Pumpkin seed	Jatropha curcas		Pomace oil
Rice bran oil (Oryza sativum)	Jojoba (Simmondsia chinensis)		Poplar
Safflower (Carthamus tinctorius)	Karanja or honge (Pongamia pinnata)		Soapstocks
Sesame (Sesamum indicum L.)	Mahua (Madhuca indica)		Switchgrass
Sorghum	Moringa (Moringa oleifera)		Tall oil
Soybeans (Glycine max)	Nagchampa (Calophyllum inophyllum)		Terpenes
Sunflower (Helianthus annuus)	Neem (Azadirachta indica)
Wheat	Pachira glabra
	Passion seed (Passiflora edulis)
	Pongamia (Pongamia pinnata)
	Rubber seed tree (Hevea brasiliensis)
	Terminalia bellirica
	Tobacco seed