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Pusat Penelitian Teh dan Kina, Gambung, Desa Mekarsari, Kecamatan Pasirjambu, Kabupaten Bandung, Jawa Barat 40972
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Jurnal Sains Teh dan Kina
Published by Pusat Penelitian Teh dan Kina
ISSN : -     EISSN : 29622034     DOI : -
Core Subject : Science, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Computer Science & IT Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Penelitian Teh dan Kina is a 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.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 226 Documents
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The Influence of biofertilizer on abundance of Nitrogen Fixing bacteria and growth of Chinchona Plants (Chinchona ledreriana.) Clone Cib. 5 Merry Antralina; Joko Santoso; Dewi Kania
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 | DOI: 10.22302/pptk.jur.jptk.v18i2.57

Abstract

The objective of this research was to eva-luate the effect of biofertilizer on the abundance of nitrogen fixing bacteria and growth of cin-chona plants (Cinchona ledgeriana Moens) clones Cib.5. The research was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, from May 2011 until June 2011. A randomized block design was used with five treatments and five replication. Application of five concentration of biofertilizer were per-formed. Concentrations were: 0, 2, 4, 6, and 8 cc/l of water. The results indicated that the application of biofertilizer gave the higher total bacterial population compared to the treatment without biofertilizer, but showed no significant effect on growth of Cinchona plants. Concen-tration of biofertilizer 8 cc/l gave the higher total bacterial population of nitrogen fixing.
Influence of biological control agents Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) on intensity of the attack twig caterpillar (Ectropis bhurmitra Wlk) and yield of tea plant (Camellia sinensis (L.) O. Kuntze) clone GMB 7 Merry Antralina; Joko Santoso
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 | DOI: 10.22302/pptk.jur.jptk.v18i1.62

Abstract

The objective of this research was to evaluate the effect of Helicoverpa armigera Nuclear Polyhedrosis Virus (HaNPV) on attack intensity of twig caterpillar (Ectropis bhurmitra Wlk) and the yield of clone Gambung 7 tea plant. The research was conducted at the Research Institute for Tea and Cinchona, Gambung, Bandung, from May 2011 till June 2011. A  randomized block design was used with five treatments and replicated four replications. Application of five controls method for the twig caterpillar were performed. HaNPV at  4 x 106 PIB/mI, and 4 x 104 PIB/ml, Bacillus turingiensis (Thuricide) 1 g/L, Spinosad (Tracer 120 SC) 0,5 ml/L, and chemical insecticides (Electric 500 EC) 0,5 ml/L. The results indicated that HaNPV at both the density gave the same effect compare to other insecticides tested on the attack intensity of twig caterpillar as well as yield of tea plant clone Gambung 7.
The influence of El-Nino on microclimate change and soil water content in Gambung tea plantation Erdiansyah Rezamela; Salwa Lubnan Dalimoenthe
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 | DOI: 10.22302/pptk.jur.jptk.v19i1.63

Abstract

The very strong intensity of 2015 El-Nino affected on microclimate change and soil water content of Gambung Tea Plantation. The observation results indicated that in the year of 2015 Gambung was experienced four dry months (with rainfall <60 mm), with maximum air temperature 30,8ºC and air humidity dropped to 65%. These condition were not suitable for tea plant to grow well, which normally required two dry months at minimum (rainfall < 60 mm), air temperature of 18–25ºC, and with relative humidity of above 70%. The affected areas by drought were present in a map (see Figure 3 of the text). About 65% of the total blocks (north section about 80% and south section about 50%) of Gambung tea plantation were affected by drought. The worst affected were blocks A6 (north section) and B8 (south section). In these blocks, about 54.70% of plant were in normal growth condition; 14.65% were in temporary and permanent wilting status; 25.34% in the state of dropping their leaves; 5.19% of the plants with dried buds twigs, and 0.12% with dried twigs and dried old branches. The soil water content (at 10 cm depth) in these blocks dropped to 7.02% and 4.99% from normally required at minimum 30%.
Correlations between morphological traits and catechin content on tea (Camellia sinensis (L.) O. Kuntze) Heri Syahrian; Nono Carsono; Neni Rostini; Vitria Puspitasari Rahadi; Bambang Sriyadi
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 | 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.
Foliar Fertilizer and Pesticide Methomyl 25% in Tea Plantation after Infested by Pest. (1) Effect of Productivity Increasing and Yield Components muthia syafika haq; Fani Fauziah; Karyudi Karyudi
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 | DOI: 10.22302/pptk.jur.jptk.v18i1.65

Abstract

The experiment of effect of Foliar Fertilizer (N& ZnSo4) and pesticide compatibility with Methomyl 25% compound to increasing Tea Productivity (Camellia sinensis) has been conducted in Research Institute for Tea and Chincona experimental plantation1350 m above sea level and andysol type soil. The experiment started from November 2013 – Februari 2014  in produced tea area with 1.080 plant population. Material plantswere GMB 4 clones with second pruning year and 12 days plucking interval. The experiment was arranged on randomized block design with 9 treatments and 3 replicate. Foliar fertilizer and pesticide combination which has been examined  were  (1) Methomyl 25% (control), (2) Methomyl 25% + Zn 1%, (3) Methomyl 25% + Zn 2%, (4) Methomyl 25% + N 1%, (5) Methomyl 25% + N 2%, (6) Methomyl 25% + N 1% + Zn 1%, (7) Methomyl 25% + N 1% + Zn 2%, (8) Methomyl25% + N 2% + Zn 1%and (9) Methomyl25% + N 2% + Zn 2. Spraying application done every after plucking. The results  showed that skiffing treatment can control the tea plantation that infested by pest and stimulate the new bud growth. The results  also showed that productivity increased significantly up to37, 48 % (2.781 gr/40 plants) when the plants were treated with Methomyl + N 1% + Zn 2%.But,the increased production is accompanied by an increase of banjhi because plant still using their nutrition to recovering after pest infested. The weight of pecco which grown from the  lateral buds is relatively small because of skiffing. Bud growth rate after given treatment was obtained only 3-4 cm/ 6 days caused by lack of light intensity at the time of reserached
Antibacterial activity of white tea extract against gram positive and negative bacteria Asri Widyasanti; Siti Hajar; Dadan Rohdiana
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 | 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 study of extension performance and tea market opportunities to successful of tea farmer groups at Sodonghilir District, Tasikmalaya Regency Kralawi Sita
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 | DOI: 10.22302/pptk.jur.jptk.v18i1.67

Abstract

The good performance of extension activities and openness tea market oppor­tunities has been playing an important role in accelerate the successful of tea farmer groups. The successful of tea farmer groups itself can be seen from the functioning of the units in farmer group activities, namely unit of study, unit of production, unit of collaboration, and unit of business. This study are aimed to determine the successful of tea farmer groups in carrying out its functions and to determine the effect of extension performance and tea market opportunities to the successful of the tea farmer groups at Sodonghilir District, Tasikmalaya Regency. This study used mixed method approach with sequential explanantory strategy that analyzed by using path analysis. The sampling method that used in this study was proportional random sampling with 56 farmers or 25% of the sample population (225 farmers). The results show that the highest successful of tea farmer groups at Sodonghilir District on unit of production, unit of collaboration, and unit of business were still low. Extension performance and tea market opportunitiest significant influenced directly to the successful of tea farmer groups. The better extension performance and greater tea market oppor­tunities, so the higher the successful of farmer groups. The efforts to increase the successful of tea farmer groups can be done by increasing the institutional capacity of tea smallholders, extension performance, and disclosure oppor­tunities of policy and tea market. 
The decreasing activity of white tea and green tea on smokers lipids profile Rosyanne Kushargina; Rimbawan Rimbawan; Budi Setiawan; Dadan Rohdiana
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 | DOI: 10.22302/pptk.jur.jptk.v18i1.68

Abstract

Smoking habit have many negative effect, including increased lipids profile. Researching on the effects of tea on lipids profile on smokers has been carried out using green tea. Research using white tea has been limited, therefore, this study aimed to analyze the effect of white tea than green tea on lipids profile in smokers, using paired sample of clinical trials design. The subjects were medium smokers (11-21 cigarettes/day) aged 30-45 years and have milddyslipidemia. Each subject was asked to drink tea in two times. Firstly, all subjects were asked to drink 3 x 200 ml white tea/day for 28 days. Secondly, treatment will be start after two weeks washout period, and they were asked to drink 3 x 200 ml of green tea/day for 28 days. Lipids profile (trigliserida (TG); cholesterol total (TC); low density lipoprotein-cholesterol (LDL-C)) of blood serum has been measured four times, at pre-post intervention of white tea and at pre-post intervention of green tea. The lipids profile were significantly decreased after white tea intervention (paired sample t-test, p<0,05). After green tea intervention,the lipids profile were decreased but significant (paired sample t-test, p<0,05) only for LDL-C. The independent sample t-test analysis showed that white tea has higher effect in decreasing the lipids profile greater than green tea, however not significantly different (p>0,05). This study was proved that white tea is more potential than green tea to decreasing lipids profile of smokers.
Alkaloid profile of endophytic Diaporthe spp. from Cinchona calisaya Nani Radiastuti; Gayuh Rahayu; Izumi Okane; Iman Hidayat; Suminar S. Achmadi
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 | DOI: 10.22302/pptk.jur.jptk.v18i1.69

Abstract

Endophytic fungi have been known as potential source of bioactive compound, similar to their host.  This study was conducted to identify endophytic Diaporthe spp. isolated from Cinchona calisaya and to explore their potential in producing alkaloids, particularly quinine. A total of 39 strains of Diaporthe spp. were identified using ITS1-5.8S-ITS2 and EF1-α gene. Seventeen strains have species name and they represent eight species of Diaporthe i.e. D. cynaroidis, D. endophytica, D. ganjae, D. gardeniae, D. litchicola, D. phaseolorum, D. pseudomangiferae, and D. rhoina. The re­maining 22 strains represents 15 groups of unidentified Diaporthe sp. High performance liquid chromatography analyses of chloroform extract of 21-days old static cultures of all fungi in potato dextrose broth showed that these strains produce totally 82 different alkaloids. Each strain producedabout 2-38 different alkaloids. Sixteen out of 39 strains (41%), i.e. one strain each of D. endophytica, D. gar­deniae,  D. phaseolorum, and  D. pseudo­mangiferae, 2 strains of D. litchicola, and 10 strains of unidentified Diaporthe were able to produce quinine. The quinine concentration ranges from 1.1 mg/l to 155.2 mg/l. By using Jaccard’s similarity index 0.44 as the cutting score, UPGMA analyses of alkaloid profile of these strains shows that these strains forms 23 clusters. Alkaloid profile clustering does not support the phylogenetic grouping. This indicates that the alkaloid profile is strain dependent. Some potential strains should be further investigated for optimization of their quinine production.
Antioxidant activity of ten grades of Indonesia black tea (Camellia sinensis (L.) O. Kuntze) liquor Yayat Sudaryat; Mimin Kusmiyati; Citra Ratu Pelangi; A Rustamsyah; Dadan Rohdiana
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 | 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.

Page 13 of 23 | Total Record : 226

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