| Word | Description |
| Jaggery | Refers to the coarse dark sugar which is made from the sap of the coconut palm, or raw sugar can juice, sued in India as sweetening agen - also known as gur. It is used also to prevent oxidative rancidity of fats, since it contains a natural antioxidant. |
| Jak Fruit | Refers to the tropical fruit that grows from the trunk and large boughs of Artocarpus integrifolia, A. heterophyllus and A integra. Bothe pulp and seeds are eaten. Analysis per 100g, pulp: carbohydrate 10g, protein 2.5g, carotene 130μg, vitamin B1 0.1 m |
| Jam | Fruit preserve set to a gel by reaction between acid pectin and added sugar. The solution of pectin in the fruit is caused to conglomerate by the sugar and forms a network of fibres enclosing liquid, I.e., a jelly. This only takes place under acid condi |
| Jamaica ginger Paralysis | Refers to polyneuritis which is caused by poisoning from an illicit extract of Jamaica ginger ('jake) affecting thousand of people in the USA in 1930. Due to triorthocresyl phosphate. |
| Jamaica Pepper | Allspice |
| Jejunum | Refers to the second portion of the small intestine between the duodenum and the ileum. |
| Jelly | Refers to a colloidal suspension that has set; may be made from gelating, pecting, agar, usually flavoured with fruit juice or synthetic flavour. |
| Jerked Beef | Dried meat of South America, Similar to biltong. |
| Jesuit's Bark | Cinchona bark, source of quinine. |
| Jonathan | Refers to calcined, ground oat chaff used as adulterant for maize and other cereals (mid-nineteenth century). |
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