I. Cov txheej txheem physiological thiab cov kev xav tau ntawm cov cw molting
Cov txheej txheem molting ntawm cov cw yog ib theem tseem ceeb hauv lawv txoj kev loj hlob thiab kev txhim kho. Thaum lub sijhawm loj hlob ntawm cov cw, thaum lawv lub cev loj hlob tuaj, lub plhaub qub yuav txwv tsis pub lawv loj hlob ntxiv. Yog li ntawd, lawv yuav tsum tau molting los tsim lub plhaub tshiab thiab loj dua. Cov txheej txheem no xav tau kev siv zog thiab muaj qee qhov kev xav tau rau cov as-ham, xws li cov zaub mov xws li calcium thiab magnesium, uas yog siv rau kev tsim thiab tawv ntawm lub plhaub tshiab; thiab qee cov tshuaj uas txhawb kev loj hlob thiab tswj kev ua haujlwm ntawm lub cev kuj tseem xav tau los xyuas kom meej tias cov txheej txheem molting du.
DMTyog ib qho ligand zoo rau cov receptors saj hauv dej, uas muaj cov nyhuv stimulating rau cov saj thiab olfactory hlab ntsha ntawm cov tsiaj hauv dej, yog li ua kom cov tsiaj hauv dej noj zaub mov sai dua thiab nce lawv cov zaub mov noj hauv qab kev ntxhov siab. Lub caij no, DMT muaj cov nyhuv zoo li molding, nrog rau kev ua haujlwm zoo li molding, uas tuaj yeem ua kom cov cw thiab crabs molting ceev duab,tshwj xeeb tshaj yog nyob rau theem nruab nrab thiab theem tom qab ntawm kev ua liaj ua teb cw thiab crab, qhov cuam tshuam yog qhov pom tseeb dua
1. DMPT (Dimethyl-β-propiothetin)
Cov Haujlwm Tseem Ceeb
- Cov tshuaj nyiam noj zaub mov muaj zog: Ua rau cov ntses, cw, roob ris, thiab lwm yam tsiaj hauv dej qab zib noj zaub mov zoo heev, ua rau lawv noj zaub mov tau zoo dua.
- Kev txhawb nqa kev loj hlob: Cov pab pawg uas muaj sulfur (—SCH₃) ua rau cov protein tsim tau zoo dua, ua kom cov nqi loj hlob sai dua.
- Kev txhim kho qhov zoo ntawm nqaij: Txo cov rog thiab ua rau cov amino acids umami ntau ntxiv (piv txwv li, glutamic acid), ua rau cov nqaij saj zoo dua.
- Cov teebmeem tiv thaiv kev ntxhov siab: Ua kom muaj kev kam rau siab rau cov kev ntxhov siab ib puag ncig xws li hypoxia thiab salinity hloov pauv.
Hom Phiaj
- Cov ntses (piv txwv li, ntses carp, ntses crucian carp, ntses bass hiav txwv, ntses croaker daj loj)
- Cov crustaceans (piv txwv li, cws, crabs)
- Cov cucumbers thiab mollusks
Cov Tshuaj Pom Zoo
- 50–200 mg/kg pub (kho raws li hom tsiaj thiab dej).
2. DMT (Dimethylthiazole)
Cov Haujlwm Tseem Ceeb
- Kev nyiam noj nruab nrab: Qhia txog cov teebmeem nyiam rau qee cov ntses (piv txwv li, salmonids, sea bass), txawm hais tias tsis muaj zog dua DMPT.
- Cov khoom tiv thaiv kab mob antioxidant: Cov qauv thiazole tuaj yeem txhim kho kev ruaj khov ntawm cov khoom noj los ntawm kev ua haujlwm antioxidant.
- Tej zaum yuav muaj cov teebmeem tua kab mob: Qee qhov kev tshawb fawb qhia tias thiazole derivatives inhibit cov kab mob tshwj xeeb.
Hom Phiaj
- Feem ntau siv rau hauv cov ntses pub, tshwj xeeb tshaj yog rau cov tsiaj dej txias (piv txwv li, ntses salmon, ntses trout).
Cov Tshuaj Pom Zoo
- 20–100 mg/kg pub (qhov koob tshuaj zoo tshaj plaws yuav tsum tau kuaj xyuas raws li hom tsiaj).
Kev Sib Piv: DMPT vs. DMT
| Feature | DMPT | DMT |
|---|---|---|
| Lub Npe Tshuaj | Dimethyl-β-propiothetin | Dimethylthiazole |
| Lub Luag Haujlwm Tseem Ceeb | Cov khoom noj uas nyiam noj, cov khoom txhawb kev loj hlob | Cov neeg nyiam me me, antioxidant |
| Kev ua tau zoo | ★★★★★ (Muaj zog) | ★★★☆☆ (Nruab Nrab) |
| Hom Phiaj | Ntses, cw, roob ris, mollusks | Feem ntau yog ntses (piv txwv li, ntses salmon, ntses bass) |
| Tus nqi | Siab dua | Qis dua |
Cov Lus Cim Rau Daim Ntawv Thov
- DMPT muaj txiaj ntsig zoo dua tab sis kim dua; xaiv raws li qhov xav tau ntawm kev ua liaj ua teb.
- DMT xav tau kev tshawb fawb ntxiv rau cov teebmeem tshwj xeeb ntawm cov tsiaj txhu.
- Ob qho tib si tuaj yeem ua ke nrog lwm cov khoom ntxiv (piv txwv li, amino acids, bile acids) los txhim kho kev ua tau zoo.
Lub sijhawm tshaj tawm: Lub Yim Hli-06-2025
