1.
Meat Sci
; 93(3): 579-85, 2013 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23273467
RESUMO
The potential of fluorescence spectroscopy was investigated for the non-destructive evaluation of ATP content and plate count on pork meat surface stored aerobically at 15 °C during three days. Excitation (Ex) Emission (Em) Matrix of fluorescence intensity was obtained and fluorescence from tryptophan (Ex=295 nm and Em=335 nm) and NADPH (Ex=335 nm and Em=450 nm) was detected. Because tryptophan and NADPH fluorescence changed along with the growth of microorganisms, microbial spoilage on meat could be detected from fluorescence. By applying PLSR (Partial Least Squares Regression) analysis, ATP content and plate count were predicted with good determination coefficient (0.94-0.97 in calibration and 0.84-0.88 in validation).
Assuntos
Trifosfato de Adenosina/metabolismo , Bactérias/metabolismo , Microbiologia de Alimentos , Carne/microbiologia , NADP/metabolismo , Espectrometria de Fluorescência/métodos , Triptofano/metabolismo , Animais , Contagem de Colônia Microbiana , Armazenamento de Alimentos/métodos , Análise dos Mínimos Quadrados , Carne/análise , Reprodutibilidade dos Testes , Suínos , Temperatura
2.
Arch Toxicol Suppl
; 14: 236-9, 1991.
Artigo
em Inglês
| MEDLINE
| ID: mdl-1805738
Assuntos
Cádmio/análise , Nicotiana/química , Plantas Tóxicas , Espectrofotometria Atômica , Turquia
3.
Chem Pharm Bull (Tokyo)
; 28(9): 2687-91, 1980 Sep.
Artigo
em Inglês
| MEDLINE
| ID: mdl-7460098
4.
Turk J Pediatr
; 13(2): 85-90, 1971 Apr.
Artigo
em Inglês
| MEDLINE
| ID: mdl-5162988