Monday, August 24, 2009

Malaysia Tuber Plants M/S FDC

Malaysia Souvenir Sheet FDC
Name: Tuber Plants
Date of Issue: 23 July 2009

The term 'root crops' or 'tuber plants' is applied to plants which produce subterranean structures that are used as human or animal foods. These perennial plants have organs which store plant nutrients. In many cases the storage organs may be a root or a modified stem, for example a swollen rhizome or corm, or a tuber such as a potato or a swollen root as in carrot or sweet potato. All these swollen underground organs are commonly spoken of as tubers

Root crops are the second most important source of carbohydrates in the worlds food, the most important being cereals. However, in the tropical world, root crops are proportionally much more important. In fact, in many tropical countries where rice is not grown, they are the staple diet. In general the protein content is low, but some, like potato and yam provide significant amounts of certain vitamins.

Taro (Colocasia esculenta)
Colocasia esculenta is a tropical plant grown primarily for its edible corm, a root vegetable known as taro or cocoyam. It is believed to be one of the earliest cultivated plants and is described by historians as an important crop.

Its primary use, however, is the consumption of its edible corm and leaves. In its raw state, the plant is toxic due to the presence of calcium oxalate and the presence of needle-shaped raphides in the plant cells which can cause irritation to the mouth and tongue/ However, the toxin can be destroyed and the tuber rendered palatable by cooking or by steeping in cold water overnight.

Corms of the small round variety are peeled and boiled and used in local favourites such as "bubur caca". The leaves are rich in vitamins and minerals.

Comment: It has a very big mistake on this FDC, do you find? The special cancellation didn't cancel the stamp.

No comments:

Related Posts with Thumbnails