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Jurnal Penelitian Teh dan Kina
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Jurnal Penelitian Teh dan Kina is an national journal providing rapid publication of peer-reviewed articles concerned with tea and cinchona commodities based on the aspects, agronomy, plant breeding, soil science, crop protection, postharvest technology and social economy. Papers dealing with result of original research on the above aspects are welcomed with no page charge.
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Articles 85 Documents
Influence of biological control agents Helicoverpa armigera nuclear polyhedrosis virus (HaNPV) on mortality twig caterpillar (Ectropis bhurmitra Wlk.) Santoso, Joko; Antralina, Merry
Jurnal Penelitian Teh dan Kina Vol 14, No 2 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (582.876 KB) | DOI: 10.22302/pptk.jur.jptk.v14i2.9

Abstract

The objective of this research was evaluate effectiveness of Helicoverpa armigera Nuclear Virus Polyhedrosis virus (HaNPV) on twig caterpillar (Ectropis bhurmitra Wlk) mortality. The experiment was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, elevation of + 1.300 m asl, from March 2011 till June of 2011. A completely randomized design was used with 12 treatments and replicated twice. Aplication of four level concentrations of HaNPV on three stadia of the twig caterpillar larvae were performed. The HaNPV concentrations were 4 x 106 PIB/mI, 4 x 104 PIB/ml, 4 x 102 PIB/ml and 0 PIB/ml, and stadia of the twig caterpillar larvae were 2, 3, and 4. The results indicated that direct application of HaNPV on twig caterpillar larvae had similar effect in mortality of the larvae, either in the laboratorium or in the greenhouse, with level of mortality was 70% within four to ten days periode. Laboratory expe­rimentation indicated that 4 x 102 PIB/ml concentration of HaNPV applied directly on stadia 3 and 4 was effective in suppressing Ectropis bhurmitra Wlk. larva population while for larvae stadium 2 the effective concentration was 4 x 104 PIB/ml. In greenhouse experiment revealed that 4 x 102 PIB/ml concentration of HaNPV was effective in suppressing larvae of stadium 2 and stadium 4, while until the end of the experiment no indication of maksimum mortality in stadium 3 population.
Effect of foliar fertilizer application on yield, and yield components of tea (Camellia sinensis Var. Assamica (Mast.) Kitamura) Haq, Muthia Syafika; Rachmiati, Yati; Karyudi, Karyudi
Jurnal Penelitian Teh dan Kina Vol 17, No 2 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (196.042 KB) | DOI: 10.22302/pptk.jur.jptk.v17i2.46

Abstract

The experiment on the effect of foliar fertilizer (29% N, 10% P2O5, 10% K2O, 3% MgO, 5% SO3, and micro compound B, 0,0075% Cu, 0,026% Fe, 0,032% Mn and 0,023% Zn) concentration on growing tea (Camellia sinensis) and productivity was con­ducted in Research Institute for Tea and Cin­chona Experimental Plantation on the altitude of 1.350 m above sea level and Andisol type soilfrom August to November 2013 with GMB 7 clones. The experiment was arranged in a randomized block design with 3 treatments and 4 replicates. Concentration levels of fertilizer were 1) 0% as control, 2) 2%, and 3) 4%. The results showed that productivity increased significantly, control (465,25 g/10 plantation) compared with the plants were treated with 2% (564,58 g/10 plantation) and 4% (573,46 g/10 plantation) fertilizer, respectively. The increase of productivity was due to increased of plucking point, quantity and weight of pecco and length of leaves. 
Antioxidant activity of ten grades of Indonesia black tea (Camellia sinensis (L.) O. Kuntze) liquor Sudaryat, Yayat; Kusmiyati, Mimin; Pelangi, Citra Ratu; Rustamsyah, A; Rohdiana, Dadan
Jurnal Penelitian Teh dan Kina Vol 18, No 2 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.86 KB) | DOI: 10.22302/pptk.jur.jptk.v18i2.70

Abstract

Tea is one kind of plant that is popular as a beverage. These plants contain antioxidant potential of flavonoids derived from polyphenol compounds. The research aimed to examine the antioxidant activity and to determine the con-tent of total phenols and total flavonoids from ten grades of Indonesian black tea liqour. Antioxidant activity was measured by the method of free radical scavenging by DPPH, total phenol content measured by Follin-Ciocalteu method, and total flavonoid content was measured by the method of AlCl3. The results of this research showed that The highest total phenol content contained in Dust III with 225,80 mgGAE/100 g and the lowest content is BTL with 111,26 mgGAE/100 g. The test results showed that BBL has the highest total flavonoid content with 0,151 mg/g, while the lowest is BTL flavonoid with 0,086 mg/g. Meanwhile the highest antioxidant activity of ten grade of Indonesian black tea infusion obtained by Dust I, with IC50 97,00 μg/ml. Meanwhile the lowest antioxidant activity with IC50 178,56 μg/ml was obtained by BTL.
Synthesis of 1-azabicyclo[3.2.2]nonane from cinchonidine Mujahidin, Didin; Hoffman, Hans Martin Rudolf
Jurnal Penelitian Teh dan Kina Vol 16, No 2 (2013)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.14 KB) | DOI: 10.22302/pptk.jur.jptk.v16i2.89

Abstract

The 1-azabicyclo[3.2.2]nonane is a potent building block which have important bio­logicaly activities including for Alzheimer and ashmatic treatment. The skeleton can be accessed by rearrangement of quinuclidine ring in Cinchona alkaloids. The rearrange­ment established three chiral center at C-2, C-3, and C-6. The rearrangement of qui­nuclidine moiety to azabicyclic[3.2.2]nonana system of mesylated cinchonidine took place by hydrolysis in a mixture of acetone–water (1:1) with 47% yields. The structure determination of the product and its absolute configuration of chiral centers were esta­blished by using spectroscopy data including, 1H NMR, 13C NMR, 1D NOE and HR-MS.
Exploration and Effectiveness Test from Some Tea Indigenous Potassium Soluble Bacteria Pranoto, Eko; Wulansari, Restu; Athallah, Faris Nur Fauzi; Lestari, Fitrianti Widya
Jurnal Penelitian Teh dan Kina Vol 19, No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.544 KB) | DOI: 10.22302/pptk.jur.jptk.v19i2.110

Abstract

Tea is a plant that benefits for health. The growth of tea plant was influenced by several factors, including superior clones and nutrient availability in soil. One of the most important macro nutrients is potassium. However, the availability of potassium is low because of retention on the soil. One of the methode for absorbed by plant was used Potassium Solubilizing Bacteria (PSB) with its organic acid function. The aim of the study was to explore and determine the density of colonies (DC) and the potential of Tea Indigenous PSB. Inoculum source from tea rhizosphere and rhizoplan of GMB 7, GMB 9 and TRI 2024 clones. The experimental design used was completely randomized design with six treatments and four replications, i.e. : GMB 7 Rhizosphere; GMB 7 Rhizoplan; GMB 9 Rhizosphere; GMB 9 Rhizoplan; TRI 2024 Rhizosphere; and TRI 2024 Rhizoplan. Ten isolates with the highest halozone was tested by the Dissolution Index (DI) of the PSB. The result showed that the highest DC was GMB 9 rhizoplan by 10.9 x 105 CFU/g and the lowest was TRI 2024 rhizoplant by 3.1 x 105 CFU/g. The DC on GMB clones series showed that rhizoplan was 14,29% higher than rhizosphere. There is no significant difference of DI for PSB colonies from all clones. From that clones, we were obtained 10 isolat that have the highest halozone, that were 2 isolates from rhizosphere and 8 isolates from rhizoplan. The average of DI rhizosphere isolates was 119,9% higher than rhizoplan.
The effectiveness of lamtoro(Leucaena sp.) leaf extract on the growth of weed in young tea Darana, Sobar
Jurnal Penelitian Teh dan Kina Vol 14, No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.137 KB) | DOI: 10.22302/pptk.jur.jptk.v14i1.8

Abstract

A research to determine the effectiveness of lamtoro leaf extract on the growth of weeds in young tea plan­tation was carried out in Pasir Sarongge Experimental Garden and Plant Pro­tec­tion Laboratory RITC Gambung from June to December 2009. Researches on the effective­ness of lamtoro leaf extracts on the germination of weed’s seed, and on the growth of weeds in the field, were conducted. Lamtoro leaf extract treat­­ment at various concentrations tried, suppressed the germination of seeds of broad­leaf weeds (hareuga and babadotan) in the laboratory. In general, the germination supp­ression were increases with increasing the concentration of the extracts tested. Spraying of lamtoro leaf extract (Leucaena sp.) starting at concentration of 7.50% resul­ted better control effect and significantly different compared to controls. In addition, spraying treatment of lamtoro leaf extract could reduce the number of weed species.
Tea Import Policy Recommendation Salam, Aziza Rahmaniar
Jurnal Penelitian Teh dan Kina Vol 17, No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.247 KB) | DOI: 10.22302/pptk.jur.jptk.v17i1.2

Abstract

This paper analyzes a posibility of a proposed policy on the importation of tea that can increase performance and competitiveness of Indonesia tea. The method used was pros­pective analysis method. The analysis revealed that the proposed policy is to increase import duty tariffs and non-tariff barriers. Policies proposed on non-tariff barriers are import controls by constructive a regulation on pro­duct importer, Indonesian packaging label, and certain importers for importation of tea as an ingredient and formulation on technical verification (VPTI) for all importation of tea products containing specified information in maximum crude fiber content of 15% and minimum of 33% extract in water (w/w) as indicated in SNI.
Antibacterial activity of white tea extract against gram positive and negative bacteria Widyasanti, Asri; Hajar, Siti; Rohdiana, Dadan
Jurnal Penelitian Teh dan Kina Vol 18, No 1 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.785 KB) | DOI: 10.22302/pptk.jur.jptk.v18i1.66

Abstract

This research was carried out to deter­mine antibacterial activity of white tea extract against gram positive and gram negative bacteria based on its MIC (minimum inhibitory concentration). Ethanol solution 96% were used to extract of white tea with a ratio of 1:9 (w/v) by using maceration method. Paper disc diffusion method was used to determination of the MIC. The concentrations were used of 2%, 4%, 6%, 8%, 10%, and 12% (w/v). The results of this research showed that MIC of white tea extract of 4%, 6%, 6% and 10% (w/v) against Pseudomonas aeruginosa ATCC 9027, Staphy­lococcus aureus ATCC 29213, Staphylococcus epidermidis ATCC 12228, and Escherichia coli ATCC 25922, respectively. The inhibition zone for 4 bacteria were 10.83 mm, 10.08 mm, 10.16 mm and 12.08 mm respectively. This result of research concluded that white tea extract have antibacterial activity against both gram positive and gram negative bacteria
The effects of organic planting medium on growth and root formation of tea seedling at early stage of tea nursery Dalimoenthe, Salwa Lubnan
Jurnal Penelitian Teh dan Kina Vol 16, No 1 (2013)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.449 KB) | DOI: 10.22302/pptk.jur.jptk.v16i1.83

Abstract

Tea plants commonly propagated through vegetative propagation using single node leaf cutting and planting on mixed of topsoil and subsoil. From time to time, it is difficult to get suitable soil for nursery and the activity could disturb ecosystem. In addition, the medium weight would become a constraint in transporation of tea seedling. To overcome these problems, an alternative planting medium of tea seedling has to be explored to reduce the use of soil. In this research, various organic materials have been tested to know their effect on growth and root formation of tea seedling at early stage of tea nursery. The experiment arranged in a complete randomized design with nine treatments, replicated three times. Treatments tested were combination of organic matter (cocopith, rice husk, sawdust, and peat soil) with top soil (15% and 25%). Cow dung, as organic fertilizer, was added to enrich planting medium. Results shows that cocopith, rice husk, sawdust, and peat soil enriched with cow dung resulted the same with top soil medium (convensional planting medium) on growth and root formation of tea seedlings at early stage of tea nursery.
Portfolio business to self-financing of research institution (Case study: Research Institute for Tea and Cinchona) Bestari, Srihadiyati Ayu; Firdaus, M; Suprihatini, Rohayati; Andati, Trias
Jurnal Penelitian Teh dan Kina Vol 19, No 1 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.476 KB) | DOI: 10.22302/pptk.jur.jptk.v19i1.99

Abstract

Case of business portfolio for self financing of  Indonesia Research Institute for Tea and Cinchona is very interesting to study. In general, the research institute of tea in tea producing countries in the world receive finan­cing from the funds cess or levy or Government Budget. In PPTK, is a very rare case because the status of PPTK is a corporate. The unit of research and development as a cost center to produce innovations to increase the compe­titiveness of national commodity tea as well as Cinchona, should be financed from the portfolio business unit. Therefore, portfolio business strategies are needed in order to play optimally the role of  PPTK accordance with its mandate. The method used to determine the position of corporate is SWOT analysis especially  method to the value of  IFE and EFE. Furthermore, to determine the position and strategize potfolio business units use Boston Consulting Group (BCG) matrix. The results showed that the value of its IFE and EFE (-0.14; 0.11) is in quadrant II that  position of stability/ratio­nalization, which led to the Selective Main­tenance Strategy. BCG matrix of the mapping results, the majority of the business portfolio in PPTK be in the Quetion Mark. One business unit shoul be divested is Stevia estate due to its position of the Dog business group. Meanwhile, the business unit of  Cash Cow group are unit of garden and black tea factory and tea experiment garden of Simalungun. In order to better self financing of PPTK, several business units in the group of Question Mark with specific strategies should be push to move into the star groups, namely (1) unit of superior plant material production of tea and cinchona; (2) unit of garden and green tea factory; (3) laboratory services and expertise; and (4) unit of production of white tea and tea packaging.