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Wiwi Prastiwinarti
Program Studi Teknologi Industri Cetak Kemasan, Jurusan Teknik Grafika dan Penerbitan Politeknik Negeri Jakarta, Jl. Prof. Dr. G.A Siwabessy, Kampus Baru UI Depok 16424
Agriculture, Biological Sciences & Forestry

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Smart Label Based on Red Cabbage Extract (Brassica oleracea) as an Indicator of Freshness of Tuna Fillets at Chiller Temperature Deli Silvia; Anisah Nur Nabilah Ishaq; Wiwi Prastiwinarti
Jurnal FishtecH Vol 10, No 2 (2021)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/fishtech.v10i2.15117

Abstract

Tuna fillets are considered good media for the growth of microorganisms because it contains a high protein level. In order to determine the rottenness of the tuna fillet, smart packaging is needed. Research has been carried out on making smart labels based on red cabbage extract as an indicator of the freshness of tuna fillets at chiller temperatures. The purpose of this research was to find the best pH variation of red cabbage extract for use as a tuna fillet indicator label. The indicator labels were made with variations in pH 2, 5, 8, and 11. The tests conducted in this research including mean RGB labels, pH tests, and organoleptic tuna fillets. This research used a Completely Randomized Design (CRD) method which consists of two repetitions for each test. The test was carried out for 8 days and tested every 2 days. From this research, it was found that the pH 2 label was the best pH variation to monitor the freshness of tuna fillets. The color change of the label occurred on the 4th day when the mean RGB label pH 2 was 168.802 ± 1.093 and the pH of the tuna filet was 6.11 ± 0.16. The organoleptic score had exceeded the sensory limit on day 4 of all parameters with the appearance, smell, and texture scores being 3.8 ± 1.0, respectively; 4.6 ± 0.8; 4.8 ± 1.4. The pH 2 label was chosen since there was a color change from pink to purple when detecting spoilage in tuna fillets.
Indikator pH Ekstrak Bunga Rosella untuk Mendeteksi Kesegaran Filet Ikan Nila pada Suhu Chiller Deli Silvia; Muhammad Fajar; Wiwi Prastiwinarti
Jurnal FishtecH Vol 11, No 1 (2022)
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/fishtech.v11i1.15118

Abstract

Tilapia is a food product that has high nutritional value so that it is favored by the people of Indonesia. However, tilapia has a short shelf life. The way to extend the shelf life is to pack the tilapia but it is difficult for consumers to know the level of freshness of the tilapia. The purpose of this study was to determine the color change of smart indicator labels using rosella flower extract to detect the freshness of tilapia filets at a chiller temperature of ± 40C by using pH variations of label color indicators, namely 3, 5, 7, and 9.  pH test, organoleptic test, and mean RGB label. The research method used is a Completely Randomized Design (CRD) method which consists of two repetitions in each test. The test was carried out for 9 days and was tested every 3 days. The results showed that the appropriate color indicator label to detect the freshness of fish fillets was pH 9 and pH 7 on day 6 because the color indicator label changed from dark brown to light brown. At pH 3 and 5, there was no visible color change. The highest pH value of tilapia fillet at cold storage temperature was 7.14 and the lowest pH was 6.46. In addition, the organoleptic value of the tilapia filet was not fresh on the 6th day.
Co-Authors Anisah Nur Nabilah Ishaq Deli Silvia Muhammad Fajar