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Lipidai

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Klasės užrašai apie lipidus - riebalai, hormonai, vaškas, fofosolipidai. Jų sandara su pvz. Ir svarba organizmams.

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 Lipidai

-polimerai, sudaryti iš šimtų monosacharidų subvienetų (pvz. riebalai, fosfolipidai, vaškai, steroidai)

o Tarp monosacharido subvienetų vyksta kondensacijos reakcija.

o Į ilgąsias grandines monosacharidai jungiasi glikozidiniu ryšiu.

 Riebalai

o Vieni geriausiai žinomų lipidų (trigliceridai)

o Sudaryti iš: glicerolio ir 3 rūgščių liekanų.

o Glicerolis: turi 3
hidroksigrupes,
prie kurių gali
jungtis rūgštys.

o Riebalų rūgštys:
turi karboksigrupę
(COOH) ir ilgas
uodegėles iš C ir H atomų.

o Riebalų rūgštys skirstomos:

 Sočiąsias (visi C atomų ryšiai viengubi)

 Nesočiąsias (turi ir dvigubųjų ryšių)




o Energija:

 1g riebalų - 9 kcal

 1g balt./angl. - 4kcal

o Funkcijos:

 riebalų sluoksnis po oda išlaiko
kūno šilumą

 dalyvauja sintetinant kai kuriuos
hormonus

 padea įsisavinti riebaluose tripius
vitaminus (A, D, E ir K)

 Energinė (naudoja riebalus, po
angliavandenių)

Document information

School year
5
Uploaded on
August 21, 2026
Number of pages
4
Written in
2025/2026
Type
Class notes
Professor(s)
V. k.
Contains
Lipidai
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