To Know is To Love Sabah
Selamat dtg ke ILSF... jgn segan & malu... sila login/daftar dan kongsikanlah idea2 & maklumat 'bernas' anda...

To Know is To Love Sabah

Anything about Sabah, the Land Below The Wind.
 
HomeHome  PortalPortal  FAQFAQ  SearchSearch  RegisterRegister  Log inLog in  
Harap anda semua sihat-walafiat, ceria, tenang & gembira ketika ini... selamat berforum... tq...
Hai...

*Never take life too serously... Nobody gets out alive anyway...
I Love Sabah Forum
Who is online?
In total there are 2 users online :: 0 Registered, 0 Hidden and 2 Guests :: 2 Bots

None

Most users ever online was 49 on Wed Jun 20, 2012 3:37 pm
Latest topics
» Produk Resell Rights 2017 yg TerLajak LARIS!!
by xbest Thu Sep 07, 2017 8:07 am

» Wabak Software Hantu Semakin Mengganas
by xbest Sun Jul 23, 2017 4:56 am

» Formula Tarik Rezeki 2015
by xbest Wed Jul 12, 2017 6:36 am

» Need a help!
by limau123 Wed May 31, 2017 2:19 pm

» Gempak! Jutawan App Guna ROBOT Jana Income Bertubi-Tubi
by xbest Thu May 11, 2017 9:56 am

» Father’s Day ahead
by ahkeok Sun May 07, 2017 10:49 am

» Mother's day is just around the corner. What to buy???
by ahkeok Tue May 02, 2017 7:44 am

» Contoh Soalan Exam Online Pegawai Penerangan S41
by xbest Thu Apr 13, 2017 8:15 am

» Seminar Tajwid Luarbiasa Edisi Ramadhan 2017
by xbest Sat Apr 08, 2017 6:13 pm

» Panduan Google Adsense Pertama Malaysia 2017
by xbest Mon Mar 27, 2017 9:06 pm

» Tyre chitchat
by tungkelly Mon Mar 20, 2017 1:11 am

» Tips Dan Panduan Cari Kerja Kosong Di Singapura Yang Lengkap
by SchulzCube Sun Mar 19, 2017 7:41 am

» Teknik Forex Sebenar Dan Cara Belajar Forex Malaysia
by SchulzCube Sun Mar 19, 2017 7:39 am

» Rahsia Jana RM50K Seminggu Dgn FOREX
by xbest Wed Mar 01, 2017 12:50 pm

» Cara Menjimatkan Membeli Dari Kedai Perabot Murah China
by SchulzCube Sat Feb 11, 2017 10:40 am

» Rahsia Cikgu Jana RM60K Dgn Smartfon Android
by xbest Sat Jan 14, 2017 4:42 pm

» Hard to reach out the text
by nurulazzin Fri Dec 30, 2016 4:43 pm

» Panduan Exam Online Penolong Pegawai Tadbir N29
by xbest Tue Nov 29, 2016 3:36 pm

» any new plan for celcom postpaid?
by popolan Fri Nov 04, 2016 11:32 am

» let's talk about telco plan
by tungkelly Fri Oct 28, 2016 11:02 pm

ILSF Shoutbox
I Love Sabah Forum
I Love Sabah time
ILSF Links
Top posters
pukutarap
 
Yorut_orut
 
pukutarap.
 
romeo
 
Rungkud
 
alphawaves
 
paragasu
 
SiokSondri
 
laa
 
orud
 
October 2017
MonTueWedThuFriSatSun
      1
2345678
9101112131415
16171819202122
23242526272829
3031     
CalendarCalendar

Share | 
 

 Importance Of Vitamins In Our Daily Diet

View previous topic View next topic Go down 
AuthorMessage
kursus-latihan
Prebet
Prebet


Number of posts : 2
Registration date : 2012-08-17

PostSubject: Importance Of Vitamins In Our Daily Diet   Fri Sep 19, 2014 9:31 am

A vitamin (US /ˈvaɪtəmɪn/ and UK /ˈvɪtəmɪn/) is an organic compound and a vital nutrient that an organism requires in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when the organism cannot synthesize the compound in sufficient quantities, and must be obtained through the diet; thus, the term "vitamin" is conditional upon the circumstances and the particular organism. For example, ascorbic acid (vitamin C) is a vitamin for humans, but not for most other animal organisms. Supplementation is important for the treatment of certain health problems, but there is little evidence of nutritional benefit when used by otherwise healthy people.

By convention, the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in amounts greater than are vitamins) nor the great number of other nutrients that promote health, and are required less often to maintain the health of the organism. Thirteen vitamins are universally recognized at present. Vitamins are classified by their biological and chemical activity, not their structure. Thus, each "vitamin" refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Such a set of chemicals is grouped under an alphabetized vitamin "generic descriptor" title, such as "vitamin A", which includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well.

Vitamins have diverse biochemical functions. Some, such as vitamin D, have hormone-like functions as regulators of mineral metabolism, or regulators of cell and tissue growth and differentiation (such as some forms of vitamin A). Others function as antioxidants (e.g., vitamin E and sometimes vitamin C). The largest number of vitamins, the B complex vitamins, function as precursors for enzyme cofactors, that help enzymes in their work as catalysts in metabolism. In this role, vitamins may be tightly bound to enzymes as part of prosthetic groups: For example, biotin is part of enzymes involved in making fatty acids. They may also be less tightly bound to enzyme catalysts as coenzymes, detachable molecules that function to carry chemical groups or electrons between molecules. For example, folic acid may carry methyl, formyl, and methylene groups in the cell. Although these roles in assisting enzyme-substrate reactions are vitamins' best-known function, the other vitamin functions are equally important.

Until the mid-1930s, when the first commercial yeast-extract vitamin B complex and semi-synthetic vitamin C supplement tablets were sold, vitamins were obtained solely through food intake, and changes in diet (which, for example, could occur during a particular growing season) usually greatly altered the types and amounts of vitamins ingested. However, vitamins have been produced as commodity chemicals and made widely available as inexpensive semisynthetic and synthetic-source multivitamin dietary and food supplements and additives, since the middle of the 20th century.


Click Here For Vitamins Supplements
Back to top Go down
 
Importance Of Vitamins In Our Daily Diet
View previous topic View next topic Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
To Know is To Love Sabah :: I LOVE SABAH Lobby :: Advertisements / Iklan-
Jump to: