Found 2 Documents

Cytotoxicity of Buah Merah (Pandanus conoideus Lamk.) Extract on Breast Cancer Cell Line (T47D) Nuringtyas, Tri R; Pratama, Yoga; G, Galih; Wahyuono, Subagus; Moeljopawiro, Sukarti
Indonesian Journal of Biotechnology Vol 19, No 1 (2014)
Publisher : Universitas Gadjah Mada

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Buah Merah (Pandanus conoideus Lamk.) has been extensively used to treat various diseases includingcancer. There are many varieties of buah merah and there was no scientifi c study comparing cytotoxicity ofdifferent varieties. The objective of this study was to investigate the cytotoxicity of three varieties of buah merahknown as Barugum, Maler and Yanggiru on breast cancer cell line (T47D). All samples were collected fromPapua, Indonesia. Each sample was extracted consecutively using three solvents chloroform, methanol andwater resulted to nine crude extracts. The cytotoxic activities were determined using MTT assay. The crudeextract showed the lowest IC50 was selected for further bioassay-guided fractionation. Fractionation was doneusing vacuum liquid chromatography coupled with preparative TLC to fi nd the active compounds. Severaldetection reagents were applied to TLC for identifi cation of the class of the potent compounds. The resultshowed that the potent extracts was obtained from Barugum methanol extract followed by Maler chloroformextract with IC50 value of 132.83 μg/ml and 139.72 μg/ml, respectively. All Yanggiru extracts did not showactivity. The bioassay-guided fractionation of Barugum and Maler extracts showed that the most potent fractioneluted by a mixture of hexane:ethyl acetate (75:25), was in Maler variety with IC50 value of 25,7 μg/ml, fourtimes higher than the most potent fraction of Barugum with IC50 value of 104,61 μg/ml. TLC analysis of themost potent fraction showed that the active compounds was class of terpene. Result of this study supportedthe utilization of buah merah Maler variety for breast cancer treatment.
Influence of Salinity on Growth and Phycoerythrin Production of Rhodomonas salina Marraskuranto, Endar; Raharjo, Tri J; Kasiamdari, Rina S; Nuringtyas, Tri R
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 13, No 3 (2018): December 2018
Publisher : Research and Development Center for Marine and Fisheries Product Processing and Biotechnol

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/squalen.v13i3.365


Microalgae is a photoautotroph organism capable of producing various photosynthetic pigments with diverse beneficial properties. Rhodomonas salina, a Cryptophyte cell, contains only phycoerythrin as its phycobiliprotein pigment. The effects of salinity on growth and phycoerythrin concentration were investigated. Microalgae R. salina were grown in natural sea water with salinity of 33‰ and 50‰.The microalgae was batch-cultured in f/2 medium at light irradiation of 1100 lux, temperature of 24–26 oC, and photoperiode of 12 h : 12 h. The microalgae cell density was directly calculated using haemacytometer. The concentration of phycoerythrin was determined by spectrophotometric method. The cell density and phycoerythrin concentration were monitored every 4 days for 20 days of cell growth. Results showed that salinity did not affect significantly both on growth and phycoerythrin concentration extracted from R. salina biomass (p>0.05; a = 0.05). At both salinity, maximum phycoerythrin concentration were reached on day 8. There was a positive correlation between cell density and phycoerythrin concentration from day 1 to day 8 of cell growth. Microalgae R. salina which was grown in natural seawater with salinity of 33‰ achieved the highest cell density of 8.4 x 105 cells/mL and the phycoerythrin concentration of 0.19 mg. 10-5 cell on day 8 of the culture. The highest phycoerythrin concentration was obtained on day 16 of the culture i.e 0.27 mg. 10-5 cell.Keywords: cell density, growth media, phycoerythrin, Rhodomonas salina, salinity