CAJ | 학술논문

研究了一种通过颜色变化能够识别猪肉新鲜程度的指示卡。以溴甲酚紫为指示剂，定性滤纸为载体，由0．3％、0．4％、0．5％、0．6％、0．7％5种不同浓度溴甲酚紫乙醇溶液制备出鲜度指示卡，将其置于托盘鲜肉包装内进行储藏试验。用半微量定氮法定期测定出猪肉挥发性盐基氮含量，并定期检测指示卡的L、a、b值，计算出其色差值ΔE。结果表明，ΔE值与挥发性盐基氮（TVB-N ）含量呈线性关系，制备的鲜度指示卡对猪肉新鲜度有指示作用，0．5％溴甲酚紫溶液制备的指示卡效果最为显著，指示卡对不同重量肉均有良好指示效果。
연구료일충통과안색변화능구식별저육신선정도적지시잡。이추갑분자위지시제，정성려지위재체，유0．3％、0．4％、0．5％、0．6％、0．7％5충불동농도추갑분자을순용액제비출선도지시잡，장기치우탁반선육포장내진행저장시험。용반미량정담법정기측정출저육휘발성염기담함량，병정기검측지시잡적L、a、b치，계산출기색차치ΔE。결과표명，ΔE치여휘발성염기담（TVB-N ）함량정선성관계，제비적선도지시잡대저육신선도유지시작용，0．5％추갑분자용액제비적지시잡효과최위현저，지시잡대불동중량육균유량호지시효과。
A kind of color changing indicating card with different freshness of pork was developed.With bromocresol purple as an indicator,qualitative filter paper as a carrier,five different concentrations (0.3%, 0.4%,0.5%,0.6%,0.7%)of ethanol bromocresol purple indicator cards were prepared.Storage experiment for fresh meat was conducted after incorporation the indicating cards into tray package.The amount of total vol-atile basic nitrogen (TVB-N)of pork was determined regularly by semi-micro kjeldah method,and the L,a,b values of indicating cards were regularly tested,then values of color difference (ΔE)were calculated.The re-sults showed that,there is a linear relationship between ΔE values and the amount of TVB-N.And the fresh-ness indicating cards can display the freshness of pork.Indicating card with of 0.5%(w/w)bromocresol pur-ple solution has the most prominent effectiveness.The good indication effect of indicating cards on different weights pork was validated.