Potaziyamu dicarboxylateNdi chakudya choyamba chowonjezera chomwe sichimapha mabakiteriya chomwe chavomerezedwa ndi European Union. Ndi chisakanizo cha potaziyamu dicarboxylate ndi formic acid kudzera mu intermolecular hydrogen bond. Chimagwiritsidwa ntchito kwambiri mu ana a nkhumba ndi nkhumba zomaliza kukula. Zotsatira za kuyesa kudyetsa zinawonetsa kuti kuwonjezera potaziyamu dicarboxylate muzakudya za nkhumba kungapangitse kuti nkhumba ziwonjezere kulemera ndikuchepetsa chiwerengero cha imfa zomwe zimayambitsidwa ndi matenda a bakiteriya. Kuwonjezera potaziyamu dicarboxylate muzakudya za ng'ombe kungathandizenso kuti mkaka wa ng'ombe ubereke bwino.

Mu kafukufukuyu, milingo yosiyanasiyana yapotaziyamu dicarboxylatezinawonjezedwa ku chakudya cha Penaeus vannamei chokhala ndi mapuloteni ochepa, kuti apeze mankhwala oletsa mabakiteriya omwe amathandiza kukula bwino komanso osawononga chilengedwe.

Zida ndi njira

1.1 chakudya choyesera

Zotsatira za njira yoyesera chakudya ndi kusanthula mankhwala zawonetsedwa mu Gome 1. Pali magulu atatu a chakudya mu kuyesaku, ndipo zomwe zili mu potaziyamu dicarboxylate ndi 0%, 0.8% ndi 1.5% motsatana.

1.2 Nsomba zoyesera

Kulemera koyamba kwa thupi la Penaeus vannamei kunali (57.0 ± 3.3) mg) C. Kuyeseraku kunagawidwa m'magulu atatu ndi ma replicate atatu mu gulu lililonse.

1.3 Malo odyetsera

Kukula kwa nkhanu kunachitika m'makhola a ukonde okhala ndi mfundo ya 0.8 mx 0.8 mx 0.8 M. Makhola onse a ukonde anaikidwa mu dziwe lozungulira la simenti (lotalika mamita 1.2, mulifupi mwake mamita 16.0).

1.4 Kuyesa kudyetsa kwa potassium formate

Magulu atatu a zakudya (0%, 0.8% ndi 1.5% potassium dicarboxylate) adapatsidwa mwachisawawa ku gulu lililonse atalemera zidutswa 30 pa bokosi. Kuchuluka kwa chakudya kunali 15% ya kulemera koyamba kwa thupi kuyambira tsiku loyamba mpaka tsiku la 10, 25% kuyambira tsiku la 11 mpaka tsiku la 30, ndi 35% kuyambira tsiku la 31 mpaka tsiku la 40. Kuyeseraku kunatenga masiku 40. Kutentha kwa madzi ndi 22.0-26.44 ℃ ndipo mchere ndi 15. Patatha masiku 40, kulemera kwa thupi kunayesedwa ndi kuwerengedwa, ndipo kulemera kwake kunawerengedwa.

Zotsatira za 2.2

Malinga ndi kuyesera kwa kuchuluka kwa nsomba zophikidwa, kuchuluka kwa nsomba zophikidwa bwino kunali nsomba 30 pa bokosi. Kuchuluka kwa nsomba zophikidwa bwino kunali (92.2 ± 1.6)%, ndipo kuchuluka kwa nsomba zophikidwa bwino kunali 0.8% potassium diformate kunali 100%; Komabe, kuchuluka kwa nsomba zophikidwa bwino kunachepa kufika pa (86.7 ± 5.4)%, pamene kuchuluka kwa nsomba zophikidwa bwino kunakwera kufika pa 1.5%. Kuchuluka kwa chakudya kunawonetsanso zomwezo.

Kukambirana kwachitatu

Mu kuyesera uku, kuwonjezera potaziyamu diformate kungathandize kwambiri kukulitsa phindu la tsiku ndi tsiku komanso kuchuluka kwa moyo wa Penaeus vannamei. Lingaliro lomweli linaperekedwa powonjezera potaziyamu dicarboxylate ku chakudya cha nkhumba. Zinatsimikiziridwa kuti kuwonjezera 0.8% potaziyamu diformate mu chakudya cha nkhanu cha Penaeus vannamei kunali ndi zotsatira zabwino zolimbikitsa kukula. Roth et al. (1996) adalimbikitsa kuwonjezera zakudya zabwino kwambiri mu chakudya cha nkhumba, chomwe chinali 1.8% mu chakudya choyamba, 1.2% mu chakudya choletsa kuyamwa ndi 0.6% mu kukula ndi kumaliza nkhumba.

Chifukwa chomwe potaziyamu dicarboxylate ingathandizire kukula ndichakuti potaziyamu dicarboxylate imatha kufika m'matumbo omwe ali ndi alkaline pang'ono kudzera mu kudyetsa mimba ya nyama yonse, ndikuwola yokha kukhala formic acid ndi formate, kusonyeza mphamvu yamphamvu ya bacteriostatic ndi bactericidal, zomwe zimapangitsa kuti matumbo a nyama azioneka ngati "osabereka", motero kusonyeza mphamvu yolimbikitsa kukula.