http___luda.go-forum.net_t1940-10-cinjenica-o-jajima-koje-niste-znali_1.xml
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Egg is one among the most favorite foods used by human. It has good taste, easy to digest and also can be eaten by everyone from infants to the elder. Eggs can be processed into many different delicious dishes. Egg can meet the nutritional needs required by human body because it is one of the best sources of protein. Eating eggs can actually lower the risk of blood clots, stroke, heart attacks and help raise cholesterol levels as well. You may know very well that egg is a cheap source of nutrients which are good to human body. However, there are many other interesting facts about eggs that you may not know. Let’s discover them through some photos below: Eggs contain more proteins than chicken or milk. Eggshell is made of calcium carbonate. It weighs nine to twelve percent and has pores that create oxygen and carbon dioxide to enter and moist air to exit. The egg white is also as important as the yolk. It contains 57 percent of the total egg's protein content. Besides, the egg white contains Vitamin B3, Vitamin B2, chlorine, magnesium, potassium, sodium and sulfur as well. The egg yolk color is determined by what the hen eat. If the hens eat a lot of yellow and orange grain, they will create thick yellow eggs If the egg white looks murky, the egg is fresh. If it looks clear, the egg is definitely from old chickens. Sometimes we see there is a little blood inside of the egg. This blood appears when blood vessels in the yolk are broken. However, the egg is till safe for eating Egg temperature can reach 40.5 degrees Celsius at the time of egg hatching. A hen often lays eggs from 250 up to 270 eggs each year Duck egg has a fishier odor and skin pores are also larger in comparison with chicken egg. Therefore, duck egg is more suitable for salted egg than chicken egg. Related links: I have been working as a doctor of a general hospital since February 1998. In addition, I am a full time writer and specialize in weight loss related issues. I also write for a number of different websites on the Internet.
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Pogledajte zanimljive činjenice o jajima. Ljuska jajeta sastoji se od kalcij karbonata, koji je također glavni sastojak antacida, spojeva želučane kiseline. Ljuska čini 9 do 12 posto ukupne težine jajeta, a sadrži pore koje omogućuju dotok kisika, te izbacivanje ugljičnog dioksida. Bjelanjak jajeta sastoji se uglavnom od proteina albumena, a sadrži također niacin (vitamin B3), riboflavin (vitamin B2), klor, magnezij, kalij, natrij i sumpor. Bjelanjak sadrži oko 57 posto ukupnog udjela bjelančevina u jajetu. Boju žumanjka određuje hrana koju kokoš konzumira. Što je više žutih i narančastih pigmenata u zrnju kojim se kokoši hrane, to će jasnija biti boja žumanjca. >> Jaja iz slobodnog uzgoja nezdravija su od onih iz kaveznog? Druge boje u jajetu variraju ovisno o njegovoj starosti i ostalim faktorima. Bjelanjci su indikator koliko je jaje svježe. Rozi ili šareni bjelanjci pokazuju da je jaje pokvareno, i takva jaja bi se trebala izbjegavati. Krv koja se ponekad može vidjeti u jajetu dolazi od napuknuća male krvne žilice u žumanjku. No to ne znači da je takvo jaje nije sigurno jesti. Boja kokoši određuje boju jajeta. Bijele kokoši najčešći su tip u SAD-u i izliježu bijela jaja, dok su kokoši smeđeg perja češće u Europi, pa tu prevladavaju i takva jaja. Nema neke bitne razlike u kvaliteti. Potrebno je od 24 do 26 sati da kokoš izlegne jaje. Ljuska jajeta stvara se u maternici kokoši. Oko 30 minuta nakon izlijeganja, proces započinje ponovo. Prosječna kokoš izlegne 250 do 270 jaja godišnje. Oko 75 milijardi jaja proizvede se u SAD-u svake godine, što je 10 posto svjetske proizvodnje. Kina je pak, najveći svjetski proizvođač jaja, a godišnje ih se proizvede 390 milijardi, što je polovica svjetske proizvodnje. Purice također izliježu jaja, no teže ih je naći na tržištu. Purice trebaju više prostora za gnijezdo, stoga njihovo držanje nije toliko ekonomično, a također imaju i jače majčinske instinkte od kokoši. Dinosaurova jaja pomagla su da se riješi stara zagnonetka što je bilo prvo. Kanadski istraživači ustvrdili su kako su jaja došla prije kokoši jer su dinosauri formirali gnijezda i lijegali jaja puno prije nego su ptice evoluirale. izvor