cover
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bandung,
Jawa barat
INDONESIA
Jurnal Penelitian Teh dan Kina
ISSN : -     EISSN : -     DOI : -
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.
Articles 85 Documents
The effective control using biopesticide insects glue against the main pest Empoasca on tea plant Sucherman, Odih
Jurnal Penelitian Teh dan Kina Vol 14, No 1 (2011)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (387.034 KB) | DOI: 10.22302/pptk.jur.jptk.v14i1.7

Abstract

The observation of the  control of bio-diversity the main pest Empoasca on tea plantation effective, efficient and neighborly environment has been undertaken testing insects glue as biodiversity control to main pests Empoasca in the field. The research done in the Pasir Sarongge Experimental Garden (1.100 m asl), Cianjur, West Java. Testing designed in random block design (RBD) with 5 treatment and 5 replication. Treatment tested were: (1) formulation of glue M-5; (2) formulation of glue M-10; (3) formu­lation of glue M-15; (4) formulation of glue comparator; (5) untreated. All the treatment of glue was applied by means of smeared on mineral water bottle (600 ml), every plot installed 5 bottle. Parameters in the observations were the population Empoasca trapped in glue, and intensity attack Empoasca. Research results in a laboratory pointed out that glue M-5 more effectively entraps pests Empoasca when compared to another formu­lation, and comparator glua, as well untreated. Whereas the results of observation in the overall pointed out that the use of formulation of glue M-5 which is formulation lowest have enough effectively to catch pests Empoasca in the field was 19,83 head trap or the equivalent to the 79,32 head any every plot in the area plot 50 m2. The arrest shall taller when experiments was undertaken in dry season.
Activity DPPH (1,1-diphenyl-2-picrylhidrazyl) free radical scavenging of some ready to drink teas on Rohdiana, Dadan; Shabri, Shabri
Jurnal Penelitian Teh dan Kina Vol 15, No 2 (2012)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (286.698 KB) | DOI: 10.22302/pptk.jur.jptk.v15i2.25

Abstract

Research of free radical scavenging activity of some ready to drink tea (RTD-Tea) was carried out. Generally, the result showed that tea beverages have a good of scavenging activity against DPPH free radical. T-AR was RTD-tea which has the stronger sca­venging activity against DPPH free radical. This RTD-tea has a low of EC50 value i.e. 63,55ml/ml. The scavenging activity followed were T-ES (63,95ml/ml), T-UP (65,75ml/ml), T-RO (86,85ml/ml), T-LI (91,15ml/ml), T-TA (107,53ml/ml), T-NG (125,36ml/ml) and T-AK (756,14ml/ml) respectively.
Correlations between morphological traits and catechin content on tea (Camellia sinensis (L.) O. Kuntze) Syahrian, Heri; Carsono, Nono; Rostini, Neni; Rahadi, Vitria Puspitasari; Sriyadi, Bambang
Jurnal Penelitian Teh dan Kina Vol 18, No 1 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (210.981 KB) | DOI: 10.22302/pptk.jur.jptk.v18i1.64

Abstract

Catechin content in tea plant is a major character in tea breeding program for a healthy beverage. A tea breeding program for high catechin content maybe will performed by indirect selecting a trait or traits that signi­ficantly correlated with high catechin content. This research was performed to identify mor­phological traits which maybe significantly correlated with high catechin content in tea plant. A randomized complete block design with three replications was used in this experiment using 10 selected clones. The experiment was performed in Gambung Experimental Station ot the Research Institute for Tea and Cinchona, Gambung, West Java. Catechin content, tri­choma density of young leaves, weight of p+2, size of mother leaves, chlorophyll content of mother leaf, stomatal density of mother leaf, mother leaf thickness, and mother leaf angle, were measured. The results indicated that stomatal density and mother leaf angle were significantly correlated. Based on path analysis indirect selection for high catechin content could be performed by selecting stomatal density considering to trichoma density, mother leaf angle and chlorophyll content. In addition, indirect selection for high catechin content could be performed by selecting other leaf angle independently without considering other morphological traits.
Antibacteririal avtivities of Bacillus cereus and Shigella dysenteriae of white tea extract in several variation of solvents Widyasanti, Asri; Priantiwi, Andita Mega; Rohdiana, Dadan
Jurnal Penelitian Teh dan Kina Vol 19, No 1 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (340.542 KB) | DOI: 10.22302/pptk.jur.jptk.v19i1.81

Abstract

Tea is used in the food, cosmetic, and herbal drug industries. White tea is a kind of tea containing a relatively high polyphenol content compared to other kind of tea, and thus has the potential of being used as a natural antibacterial. The objective of this research was to study the antibacterial activity of of  white tea extract in several variation of  13 % (w/v) concentration of solvents to the activity of gram-positive bacteria (Bacillus cereus) and Gram-negative bacteria (Shigella dysenteriae). Laboratorium experimental method was used in this descriptive study. The antibacterial activity study was comprised of estimating inhibition area and total of bacterial growth. The results revealed that white tea extract inhibited bacterial growth, indicating that white tea extract from the n-hexane, ethyl acetate and 96% ethanol solvents could be developed as an antibacterial material. The diameter of the inhibition area to Bacillus cereus bacteria for n - hexane , ethyl acetate, and  ethanol 13 % (w/ v)  solvents were 0.6 mm, 10.5 mm and 1.75 mm, respectively; while for Shigella dysenteriae bacteria were 0,5 mm, 9,86 mm  and 10,6 mm, respectively. The total growth of Bacillus cereus bacteria for n-hexane, ethyl acetate, and ethanol 13 % (w/v) solvent were 1.3 x 107, 6.0 x 106, and  1.1 x 104 CFU / ml , and of Shigella dysenteriae bacteria were  1.0 x 107,  6.5 x 106 and 4.6 x 106 CFU / ml, respectively.
Sustainability Implication of the Lestari Tea Certification Program Implementation on the Tea Small Holder at Campaka Subdistrict Cianjur Hutagalung, Tulus Bangun
Jurnal Penelitian Teh dan Kina Vol 19, No 1 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (413.772 KB) | DOI: 10.22302/pptk.jur.jptk.v19i1.80

Abstract

In order to increase the income of tea smallholder and maintain the sustainability of tea, Dewan Teh Indonesia collaborated with Business Watch Indonesia in establishing a local certification scheme that is called as Lestari Tea Certification Program. This certification program has been conducted at some areas since 2011 until 2013 and one of the areas was Campaka sub-district, Cianjur. This research aimed at analysing the sus­tainability impact of the certification program by questionnaire and interview data collection. Analysing sustainability is conducted by using Mann-Whitney test by comparing the per­ception of the tea farmers who participated and those who didn’t participate on the certification program. Independent sample t test is also used to test the differentiation of the mean the income and transportation vehicle and com­munication asset between member of Tea Lestari Certification Program and those who are not. Moreover, logistic regression is used to know which variable more influence the probability for the tea farmers to join the certification program. The output of Mann-Whitney test shows that there is significant difference on the aspect of environment, economy, and social between tea farmers that participated and those who didn’t participate on the certification program. Logistic reg­ression output shows that education level, size of plantation land, and location of village influence the probability of the tea farmers whether to join or not join the Lestari Tea Cerfication Program.
Synthesis and isolation of theaflavin from fresh tea leaves as bioactive ingredient of antioxidant supplements Shabri, Shabri; Maulana, Hilman
Jurnal Penelitian Teh dan Kina Vol 20, No 1 (2017)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (330.483 KB) | DOI: 10.22302/pptk.jur.jptk.v20i1.120

Abstract

Theaflavin (TF) is a product of catechin oxidation that give contribution to golden yellow color, brightness, briskness of black tea and has a potential as natural antioxidant activity. TF has a higher superoxide radical capture rate than EGCG (Epigallocatechin gallate). The study was to synthesize TF components in the form of extracts that have high antioxidants. Materials used in this research is bud+3 leaves from RITC clone (GMB 7). The research were caried out used 15 liters of tea leaves pulp per treatment, fermentation using fermentor with 15 L/min, 20 L/min and 25 L/min airflow treatment, separation of TF from thearubigin (TR) used 2.5% NaHCO3, and isolation of TF from impurity compounds used silica gel column with ethyl acetate/hexane as eluent, and DPPH (1,1-diphenyl-2-picryl hydrazyl) for antioxidant activity. The result showed that TF synthesis of fresh tea leaf catechin at water-air rate of 25 liters/minute could produced TF extract and yield TF purity extract with 1.01% and 39.15% in dry weight respectively after isolation by silica gel column. Antioxidant activity by DPPH from TF extract showed the smallest value of EC50 is 12.16 mg/L at 150 mg dose and its activity increased with the addition of concentration of TF extract.
Effect of root growth regulator and bio fertilizer on growth of grafted cuttings of Cinchona ledgeriana Moens clone Cibeureum 5 in nursery Kusumo, Herland Wijaya; Santoso, Joko
Jurnal Penelitian Teh dan Kina Vol 17, No 2 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (132.041 KB) | DOI: 10.22302/pptk.jur.jptk.v17i2.52

Abstract

An experiment to determine the best concentration of root growth regulator and bio fertilizer dosage to increase the growth of grafted cuttings of Cinchona spp. has been conducted in the shading of cuttings seedling Research Institute of Tea and Cinchona, Gambung from, April to June 2013. Expe­rimental design used was a randomized block design (RBD) with sixteen treatments in two replications. The treatments were: Root Growth Regulator (RGR) consisted of four treatments; 0, 25, 50, 75 mg/mlcombined with Bio Fer­tilizer consisted of four dosages: 0; 0,5; 1,0; 1,5 mg/plant. The results showed that root growth regulator combined with bio-fertilizer had good effect on first occurrence of root, root length and root volume. Root Growth Regulator of 50 mg/ml + bio-fertilizer 0 g/plant gave best effect on root length and root volume.
Socio economic characteristics and its effect to tea farming management behavior of tea smallholders in West Java Province Sita, Kralawi
Jurnal Penelitian Teh dan Kina Vol 18, No 2 (2015)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (297.727 KB) | DOI: 10.22302/pptk.jur.jptk.v18i2.79

Abstract

The research aimed to: 1) described the socio-economic characteristics of tea small-holders in West Java Province; 2) described tea farming management behavior of tea small-holder in West Java Province; and 3) analyzed the effect of socio-economic characteristics to a behavior of tea farming management. The research took place in nine tea smallholder plantation center in West Java Province where the Program of National Tea Agribusiness Improvement Action held. The research method used descriptive study with quantitative app-roach. The sampling method used proportional random sampling with 320 respondents or at least 5% from population area. Data analyzed used multiple linear regression analysis with Backward Model through SPPS 21.0 program. The result showed that tea smallholders have a certain socio-economic characteristics in mana-ging their tea farming. Behavior tea small-holders in tea farming management showed similarities and differences. The limited access to productive resources, technology, informa-tion, market, financial and extension make management on tea farming not optimal. Eco-nomic variables i.e. gender, main job, tea pro-ductivity, tea prices, and tea farming income positively significant to tea farming mana-gement behavior of tea smallholders. Its va-riables have the power to encourage and to motivate potential influence and spirit of tea smallholders in managing their tea farming.
Optimization and characterization of green tea polyphenol extract from various solvents Shabri, Shabri; Rohdiana, Dadan
Jurnal Penelitian Teh dan Kina Vol 19, No 1 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (337.395 KB) | DOI: 10.22302/pptk.jur.jptk.v19i1.82

Abstract

Tea has a high content of polyphenols with potent antioxidant activity and beneficial for health. Availability of polyphenols extract is still very limited. The aim of this study to optimation and characterization of green tea polyphenol extract base on some solvents. Parameters analyzed were polyphenol content and yield of some extraction process conditions. This result showed that extraction by the ratio of tea and solvent was 1 : 15 b/v, extracted by acetone 70% solution in temperature 600C for 15 minutes obtain polyphenol content of 53,30% b/b and total yield of 40,17% b/b.
Analysis of Tea Rhizosphere Bacterial Community at the Seedling Stage Using Terminal Restriction Fragment Length Polymorphism (TRFLP) Techniques Susilowati, Dwi Ningsih; Fauziah, Fani; Pranoto, Eko; Hidayat, Ernin; Setyowati, Mamik; Rachmiati, Yati
Jurnal Penelitian Teh dan Kina Vol 19, No 2 (2016)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Original Source | Check in Google Scholar | Full PDF (375.744 KB) | DOI: 10.22302/pptk.jur.jptk.v19i2.114

Abstract

Bio-imunizer contains an active compound of  Chryseobacterium sp. and Bacillus sp. has been developed by PPTK Gambung. This formula has positive effect on the growth of tea plants also potentially increasing resistance of the plant. The purpose of this study was to determine the effects of bacteria in Bio-imunizer to the rhizosphere bacterial communities as well as the consistency of its existence after application on tea plants at the nursery stage. The technique used in this research is Terminal Restriction Fragment Length Polymorphism based on metagenomic and culture dependent approaches. The value of relative abundance, Shannon diversity index, Pielous evenness index, and Simpson dominance index were calculated. Based on the T-RF profiles of rhizosphere bacterial communities show that Chryseobacterium sp. and Bacillus sp. which is the active compound of  Bio-imunizer consistently found in the tea plant rhizosphere. Application of Bio-imunizer can increase the diversity of rhizosphere bacterial community without affecting the communities that already exist.