Hasil dan Kualitas Okra (Abelmoschus esculentus L. Moench.) Merah dan Okra Hijau dengan Jenis Pupuk yang Berbeda

Okra fruit contains phenolic compounds as natural antioxidant. The aim of this research was to analyze the effect of different types of fertilizers on production and quality of two okra varieties. The experiment was conducted in October 2017 to February 2018 at Bogor Agricultural University experimental field at Leuwikopo, Darmaga, Bogor (-6033’49.3”SL, 106043’30.7’’EL). The experiment used nested randomized complete block design with 2 factors and 4 replications. The first factor consisted of two okra varieties with different colour (red and green okra). The second factor was fertilizer types consisted of no fertilizer, organic (cow manure), combination of organic + inorganic, and inorganic fertilizer. The results showed that fertilizer types significantly affected plant height and fruit N content but did not affect fruit production. Red okra had a higher plant height, lower number of leaves and leaf K content than those of the green okra. The interaction effect of both factors was significant on total phenolic content in fruit and P content in leaf. The highest total phenolic content in fruit was showed by red okra with inorganic fertilizer, although it was not significantly different to those of red okra with combination organic + inorganic fertilizer, and also to green okra with organic fertilizer. The highest P content in leaf was found in red okra without fertilizer, however it was not significantly different to red okra with combination organic + inorganic fertilizer, green okra with organic fertilizer, and green okra with inorganic fertilizer.Keywords: inorganic fertilizer, leaf nutrient, organic fertilizer, phenolic compound

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Çukurova Bölgesi Koşullarında Farklı Zamanlarda Ekimi Yapılan Brüksel Lahanalarında Bitki Gelişimi, Verim ve Baş Kalitesi

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v7i7.1062-1068.2569 ◽

2019 ◽

Vol 7 (7) ◽

pp. 1062

Author(s):

İbrahim Burak Yılmaz ◽

Nebahat Sarı

Keyword(s):

Vitamin C ◽

Antioxidant Capacity ◽

Plant Height ◽

Total Phenolic Content ◽

Phenolic Content ◽

Growth Yield ◽

The Other ◽

Total Phenolic ◽

Brussels Sprout ◽

Main Shoot

In this study, plant growth, yield and sprout quality were investigated by planting at three different periods in three different Brussels sprout varieties in Çukurova Region. In this research, the effects of four different sowing and planting times on plant height (cm), main shoot diameter (mm), leaf number (number/plant), yield (g/m2), sprout weight (g), sprout diameter (mm), sprout height (mm), vitamin C (mg/100 g), antioxidant capacity [μmol trolox equivalents (TE)/g] and total phenolic content [mg gallic acid equivalent (GAE)/100 g] were investigated in Franklin Fı, Maximus Fı and Divino Fı Brussels sprout varieties. According to the research results; Maximus Fı variety was found to be longer, thicker and more leafy than the other varieties in terms of plant height, main shoot diameter and number of leaves. Based on yield, Maximus Fı variety was recorded to be more efficient (584.88 g/m2) than the other varieties (367.97 g/m2 and 259.82 g/m2 in Franklin Fı and Divino Fı, respectively). Maximus Fı was superior than the other Brussels sprout varieties, Franklin Fı and Divino Fı in terms of sprout weight, sprout diameter and sprout height. When the planting times were evaluated, it was recorded that the 1st period was more suitable in terms of both yield and sprout characteristics compared to the other periods. In the vitamin C content, antioxidant capacity and total phenolic content, Franklin Fı was showed higher rates than the other varieties and more nutrient content was detected in the late plantings.

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(473) Influences of Fertilizer Source and Insecticide Application on Phenolic Compounds in Pac Choi (Brassica rapa L.)

HortScience ◽

10.21273/hortsci.40.4.1092c ◽

2005 ◽

Vol 40 (4) ◽

pp. 1092C-1092

Author(s):

Xin Zhao ◽

Edward Carey ◽

James Nechols ◽

Kim Williams ◽

Weiqun Wang

Keyword(s):

Phenolic Compounds ◽

Brassica Rapa ◽

Phenolic Content ◽

Block Design ◽

Organic Fertilizer ◽

Total Phenolic ◽

Fertilizer Treatment ◽

Insecticide Application ◽

Head Weight ◽

Pac Choi

Implications of dietary phenolic compounds for human health and disease prevention have been indicated by a body of literature. A greenhouse pot study was performed to investigate the impacts of fertilizer source and preventive insecticide application on phenolic compound levels in pac choi [Brassica rapa (L.) cv. Mei Qing]. A two-way randomized complete-block design with five replications was used in this experiment. Fertilizer source consisted of two levels: conventional fertilizer (pre-plant application of Osmocote slow-release fertilizer), and organic fertilizer (pre-plant application of vermicompost and fertigation with compost tea and fish emulsion). Insecticide application consisted of three levels: organic (pyrethrin) vs. conventional (permethrin), and a plain water control. At harvest, total phenolics and individual phenolic compounds in pac choi leaves (blades) were analyzed by Folin assay and HPLC, respectively. Head weight of pac choi was significantly higher under conventional fertilizer treatment, while it was not affected by insecticides. Total phenolic content of pac choi was significantly increased by organic fertilizer treatment. HPLC results indicated that organic fertilizer treatment resulted in significantly higher levels of individual phenolic compounds, including chlorogenic acid and ferulic acid. In contrast, preventive insecticide application showed little effect on the phenolics in pac choi. Correlation analysis excluded the influence of plant size (head weight) on phenolic content in pac choi. Differential N-forms, rates of nutrient release, and/or variable nutrient content in organic and conventional fertilizer treatments may contribute to elevated phenolic content in organically fertilized pac choi.

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Biological Activities and Optimal Conditions for Making Khlu Tea

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.901.11 ◽

2020 ◽

Vol 901 ◽

pp. 11-15

Author(s):

Udomdeja Polyium ◽

Nopporn Sakulyunyongsuk

Keyword(s):

Total Phenolic Content ◽

Phenolic Content ◽

Biological Activities ◽

Block Design ◽

Sustainable Use ◽

Radical Scavenging ◽

Total Phenolic ◽

Mean Values ◽

Aoac Method ◽

The Difference

This research aims to study the biological activities of Khlu (Pluchea indica (L) Less) for the development of herbal tea. The leaves of Khlu were analyzed, including proximal composition using the AOAC method, antioxidant by DPPH radical scavenging assay, and total phenolic content by Folin-Ciocalteu's method. The sensory quality assessment of Khlu tea with randomized complete block design (RCBD). The mean was analyzed for the variance of ANOVA and analyzed for the difference of mean values using LSD method. The results showed that the fresh and dried leaves of methanol extract were showed the optimal of the DPPH values and the highest of total phenolic content. The optimal condition for the process of making Khlu tea was the temperature at 70 °C for 7 hours. The scores of sensory evaluation in terms of appearance, color, aroma, flavor (astringent) and overall were 7.37 ± 1.22, 7.23 ± 1.16, 6.97 ± 1.30, 7.00 ± 1.14 and 7.63 ± 1.10, respectively. These represent the potential of food crops for food sustainable use of biodiversity.

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Leaf Pigment, Phenolic Content, and Production of Green Shallot of Five Different Shallot Varieties

Planta Tropika Journal of Agro Science ◽

10.18196/pt.v9i1.8045 ◽

2021 ◽

Vol 9 (1) ◽

pp. 48-57

Author(s):

Fiadini Putri ◽

Sandra Arifin Aziz ◽

Nuri Andarwulan ◽

Maya Melati ◽

Suwarto Suwarto

Keyword(s):

Total Phenolic Content ◽

Phenolic Content ◽

Block Design ◽

Total Phenolic ◽

Anthocyanin Content ◽

Nutrient Analysis ◽

Vegetative Period ◽

Leaf Pigment ◽

Leaf Tissues ◽

Observation Times

Five shallot varieties namely ‘Bauji’, ‘Bantaeng’, ‘Tuk Tuk’, ‘Rubaru’, and ‘Palasa’ were examined for their leaf pigment, total phenolic content, leaf tissue nutrient analysis, and green shallot production. The experiment was conducted in in Cikabayan greenhouse, IPB University, Dermaga, Bogor, arranged in a randomized complete block design with single factor (variety) and three replications. The observations were carried out three times in the maximum vegetative period, consisting of 20, 30, and 40 days after planting. The result showed that ‘Palasa’ had the highest leaf pigment content, such as chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid, while the anthocyanin content fluctuated between the varieties and observation times. ‘Palasa’ also had the highest sulfur content in the leaf tissues. On the contrary, ‘Palasa’ had the lowest production compared to other the varieties. Meanwhile, ‘Bantaeng’ had the highest green shallot production, total nitrogen, and total phosphorus content in the leaf tissues. Total phenolic content fluctuated in the five varieties and observation times. The highest total phenolic content was in ‘Tuk Tuk’, observed 20 days after planting. The principal component analysis (PCA) showed that the five shallot varieties formed three clusters. The first was ‘Palasa’, the second cluster was ‘Bauji’, ‘Tuk Tuk’, and ‘Rubaru’, while the third cluster was ‘Bantaeng’. ‘Palasa’ had the highest content of leaf pigment, while Bantaeng had the highest leaf production. Leaf pigment and total phenolic content changed along with the increasing plant age in all varieties.

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Respons pertumbuhan tanaman kelapa kopyor (Cocos nucifera L.) belum menghasilkan terhadap pemberian pupuk anorganik yang dikombinasikan dengan pupuk organik cair

Kultivasi ◽

10.24198/kultivasi.v19i1.23607 ◽

2020 ◽

Vol 19 (1) ◽

pp. 1069

Author(s):

Fatwa Halimah Risandi ◽

Mira Ariyanti ◽

Mochamad Arief Soleh

Keyword(s):

Plant Height ◽

Cocos Nucifera ◽

Block Design ◽

Organic Fertilizer ◽

Inorganic Fertilizer ◽

Organic Fertilizers ◽

Inorganic Fertilizers ◽

Randomized Block Design ◽

Cocos Nucifera L ◽

The Right

Sari. Kelapa kopyor merupakan salah satu plasma nutfah yang ada di Indonesia dan potensial untuk dikembangkan. Upaya peningkatan produktivitas kelapa kopyor dapat melalui pemupukan, yaitu dengan pemberian pupuk anorganik dan pupuk organik cair. Penelitian ini bertujuan untuk mengetahui pemupukan yang tepat untuk tanaman kelapa kopyor belum menghasilkan dengan kombinasi pupuk anorganik dan pupuk organik cair. Penelitian ini dilaksanakan di Lahan PT. Mekar Unggul Sari (Taman Buah Mekarsari), Cileungsi, Bogor, Jawa Barat, pada bulan Juli sampai dengan Desember 2018. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK), yang terdiri dari 16 perlakuan dan masing-masing perlakuan terdiri dari 2 tanaman dan diulang sebanyak 2 kali. Hasil penelitian menunjukan bahwa kombinasi dosis 50% pupuk anorganik dengan 25% dosis pupuk organik cair dari dosis anjuran cenderung berpengaruh baik pada parameter pertambahan tinggi tanaman, lilit batang, dan jumlah daun, sementara kombinasi dosis 75% pupuk anorganik dan 125% dosis pupuk organik cair cenderung meningkatkan rata-rata luas daun.Kata kunci : Pupuk anorganik ∙ Pupuk organik cair ∙ Kelapa kopyor Abstract. Kopyor coconut is one of the germplasm from Indonesia and potential to be developed. Efforts to increase the productivity of kopyor coconut can be through fertilization, by providing inorganic fertilizers and liquid organic fertilizers. This study aimed to understand the right fertilization for young kopyor coconut plants that applied by combination of of inorganic fertilizer and liquid organic fertilizer. This research was conducted at the PT. Mekar Unggul Sari (Mekarsari Fruit Garden), Cileungsi, Bogor, West Java, from July to December 2018. It used a Randomized Block Design (RBD), that consisted of 16 treatments and each treatment consisted of 2 plants and repeated 2 times. The results showed that the combination of 50% dosage of inorganic fertilizer with 25% dosage of liquid organic fertilizer had a trendto give better effect on plant height, stem diameter, and leaf number, while 75% dosage of inorganic fertilizer with 125% dosage of liquid organic fertilizer tend to gave better effect on leaf area.Keywords : Inorganic fertilizer ∙ Liquid organic fertilizer ∙ Kopyor coconut

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Effects of Organic Fertilizer and Drying Methods on Total Phenolic Content and Antioxidant Capacity of Organic White Tea (Camellia sinensis (L.) Kuntze)

Turkish Journal of Agriculture - Food Science and Technology ◽

10.24925/turjaf.v7i10.1641-1647.2714 ◽

2019 ◽

Vol 7 (10) ◽

pp. 1641

Author(s):

Emine Yurteri ◽

Aysel Özcan ◽

Fatih Seyis

Keyword(s):

Antioxidant Activity ◽

Camellia Sinensis ◽

Total Phenolic Content ◽

Phenolic Content ◽

Organic Fertilizer ◽

Total Phenolic ◽

Drying Methods ◽

White Tea ◽

Phenolic Constituents

The aim of this study was to determine the effect of different fertilizer doses and drying methods on total phenolic contents and antioxidant activity of organic white tea (Camellia sinensis (L.) Kuntze) obtained from Hemşin Valley, region of Rize/Turkey. The determination of phenolic constituents was done by the Folin-Ciocalteau method and the determination of antioxidant activity by the FRAP method. The results showed that the phenolic content of white tea was as follows: 443,7- 506,2 µg GAE/g DW in the drying oven, 421,4- 473,6 µg GAE/g DW in shadow and 434,4- 485,2 µg GAE/g DW in the liofilizator. According to the FRAP method the antioxidant activity was as follows: 1130,1-1176,9 mg FeSO4/gr DW in drying oven, 1141,2-1157,1 mg FeSO4/gr DW in shadow and 1005,3-1183,2 mg FeSO4/gr DW in lyophylizator. The results revealed that different fertilizer doses and drying methods had important effects on the total phenolic content and antioxidant activity of white tea.

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Effect of Organic Fertilizers on Antioxidant Activity and Bioactive Compounds of Fenugreek Seeds in Intercropped Systems with Buckwheat

Agronomy ◽

10.3390/agronomy9070367 ◽

2019 ◽

Vol 9 (7) ◽

pp. 367 ◽

Cited By ~ 1

Author(s):

Aliyeh Salehi ◽

Sina Fallah ◽

Karin Zitterl-Eglseer ◽

Hans-Peter Kaul ◽

Ali Abbasi Surki ◽

...

Keyword(s):

Antioxidant Activity ◽

Bioactive Compounds ◽

Total Phenolic Content ◽

Phenolic Content ◽

Organic Fertilizer ◽

Organic Fertilizers ◽

Total Phenolic ◽

Broiler Litter ◽

Antioxidant Power ◽

Fenugreek Seeds

Antioxidants and flavonoids are beneficial compounds used in the pharmaceutical and food industries that are derived from natural sources. A two-year field experiment was undertaken to investigate the effect of agricultural management practices on the trigonelline content, antioxidant activity measured with DPPH (2,2-Diphenyl-1-Picrylhydrazyl) and FRAP (Fe+++-Reduction, Ferric reducing antioxidant power), total phenolic content, total flavonoids content, and specific flavonoid contents of fenugreek seeds. The treatments examined were sole fenugreek (Sole F) and three intercropping ratios with buckwheat (B) (F:B = 2:1, 1:1, and 1:2), each with three types of fertilizer (chemical fertilizer, integrated fertilizer, and broiler litter). The highest trigonelline content of fenugreek seeds was obtained in F:B = 2:1 fertilized with broiler litter. Compared to Sole F, the fenugreek seeds harvested in the intercropped treatments had higher antioxidant activity, total phenolic content, vitexin, isovitexin, orientin, and isoorientin. The treatment F:B = 2:1 enhanced the antioxidant activity and the content of bioactive compounds. Overall, the addition of organic manure to fenugreek seeds was highly effective at promoting all compounds analyzed in both the sole and the intercrop systems. Our study found that harvested fenugreek seeds from plants that were intercropped with buckwheat and with the application of organic fertilizer enhanced the seed content of antioxidants and flavonoids.

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