Uji Aktivitas Antioksidan Ekstrak Etanol Rambut Jagung (Zea mays L.) dengan Menggunakan Metode 2,2-difenil-1-pikrilhidrazil (DPPH)

ABSTRAKPengujian aktivitas antioksidan pada ekstrak etanol Rambut Jagung (Zea Mays L.) yang telah dilakukan dengan menggunakan metode DPPH (2,2-difenil-1-pikrilhidrazil). Sebagai kontrol positif digunakan vitamin C. Ekstrak etanol  diperoleh dengan metode maserasi. Aktivitas antioksidan sampel ditentukan oleh besarnya persentase peredaman radikal DPPH. Ekstrak etanol rambut jagung memiliki aktivitas antioksidan lebih tinggi dibanding dengan vitamin C sebesar 7,73 ppm dan masuk dalam kategori sangat kuat. Kata kunci : DPPH, Rambut Jagung, Uji Aktvitas Antioksidan, (Zea mays L.). ABSTRACTThe antioxidant activity test of ethanol corn hair (Zea Mays L.) extract has been done by using DPPH (2,2-diphenyl-1-picrylhydrazyl). As a positive control used vitamin C. The ethanol extract is obtained by maceration method. The antioxidant activity of the sample is determined by the percentage of DPPH radical reduction. Ethanol corn hair extract has higher antioxidant activity than vitamin C at 7.73 ppm and in the category of very strong.Keywords: Antioxidant Activity Test, DPPH, Hair Corn, (Zea mays L.)

INCOME ANALYSIS OF ZEA MAYS L. FARMING BUSINESS IN RUMPIN DISTRICT, BOGOR REGENCY

Zea mays L. is one of the productive commodities cultivated in Rumpin District, Bogor Regency. Although Rumpin Regency has potential, it is faced with several problems, namely the high price of fertilizers, the widespread use of similar pesticides, high labor costs, the high price of diesel fuel for the operational needs of agricultural machinery and equipment, and differences in the use of tools and machinery by each farmer in Zea mays L. cultivation activities. The purpose of this research is to analyze the production costs, income, and income efficiency of Zea mays L. farming in Rumpin District. The method used in this research is quantitative. Production cost expenditures were analyzed using cost analysis methods, and farming income efficiency was determined using R/C ratio analysis. The results showed that the total cost incurred was IDR 17,587,098/ha with a cash cost of IDR 7,486,439/ha and non-calculated costs of IDR 10,100,659/ha. Zea mays L. farming resulted in a positive average total income value. Income from cash costs was IDR 21.266.894/ha, and income from total costs was IDR 11.166.235/ha. The R/C ratio for cash costs was 5.17, and the R/C ratio for total costs was 2.42. This profitable Zea mays L.farming business can be continued by farmers in Rumpin District, Bogor Regency

Алелопатичні особливості ароматичних рослин родини Lamiaceae Lindl.

Allelopathic features of 13 aromatic plants of Lamiaceae Lindl. family are studied. Dracocephalum moldavica L., Lavandula vera D.C. and Lophanthus anisatus Adans. are showed the highest phytotoxic effect of aqueous extracts of lifetime emissions of aromatic plants relative to Triticum aestivum Linn., which reduced germination rates, respectively, by 15.6; 4.9 and 1.7 times. Extracts of plant material of Nepeta transcaucasica Grossh showed the stimulating effect, while germination of wheat was around 96.3 % versus 86.0 % on control. Hyssopus officinalis L. and Dracocephalum moldavica resulted in inhibition of growth processes in Zea mays L. by 1.8–2.6 times. Stimulating effect on Zea mays seed (2 to 6%) was found in Salvia sclarea L., S. officinalis L. and Elsholzia cristata Willd. Hyssopus officinalis, Monarda didyma L. and Dracocephalum moldavica are showed the highest phytotoxic effect of aqueous extracts of remains of aromatic plants relative to Triticum aestivum, which reduced germination rates, respectively, by 2.6; 2.0 and 1.8 times. Lophanthus anisatus, Dracocephalum moldavica and Lavandula vera resulted in inhibition of growth processes in Zea mays by 1.7; 1.5 and 1.4 times.Вивчено алелопатичні особливості 13 ароматичних рослин родини Lamiaceae Lindl. Установлено, що найвищий фітотоксичний ефект щодо Triticum aestivum Linn. притаманний водним екстрактам прижиттєвих виділень Dracocephalum moldavica L., Lavandula vera D.C., Lophanthus anisatus Adans., які знизили схожість насіння відповідно у 15,6; 4,9 і 1,7 разу. Стимулювальний вплив виявили витяги з рослинної сировини Nepeta transcaucasica Grossh: схожість насіння Triticum aestivum Linn. становила 96,3 % проти 86,0 % у контрольному варіанті. Hyssopus officinalis L. і Dracocephalum moldavica загальмували ростові процеси у Zea mays L. в 1,8–2,6 разу. Стимулювальний ефект щодо насіння Zea mays (від 2 до 6 %) виявлено у Salvia sclarea L., S. officinalis L. та Elsholzia cristata Willd. Найвищий фітотоксичний ефект щодо Triticum aestivum водних екстрактів рослинних решток зафіксовано у Hyssopus officinalis, Monarda didyma L. та Dracocephalum moldavica, які знизили схожість насіння відповідно у 2,6; 2,0 і 1,8 разу. Lophanthus anisatus, Dracocephalum moldavica та Lavandula vera загальмували ростові процеси у Zea mays відповідно в 1,7; 1,5 і 1,4 разу

Genetic variation and relationships of Zea mays and Sorghum species using RAPD-PCR and

Genetic relationship between some species of Zea mays and Sorghum was determined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) of seed protein and random amplification of polymorphic DNA (RAPD-PCR) markers. According to SDS-PAGE analysis, 78 band were identified across the studied species. The number of bands varies from 17 bands in sample number 5 to 6 in sample number 6. Analysis of RAPD-PCR of DNA provided more precise information concerning relationships between Zea mays and Sorghum species than SDS-PAGE analysis. A remarkable result from this study was identifying a close relationship between Zea mays spp mays and Zea mays spp Mexicana. Further support comes from the molecular data of RAPD, which indicate that close relationship between Sorghum valgare and Sorghum bicolor.Keywords: Zea mays, Sorgum volgare pres, Punciu milia ceaum L. protein, random amplification of polymorphic DNA.African Journal of Biotechnology Vol. 12(27), pp. 4269-427

Evaluation of maize and hemp cultivars as bioenergy crop

We are cultivating annual and perennial crops as monoculture and as mixed culture to investigate plant biomass use for production of renewable energy sources in northern latitudes. We have grown different hemp (Cannabis sativa L.) and bioenergy maize (Zea mays L.) cultivars in 2007-2009 at Viikki Experimental Farm, University of Helsinki

PENGARUH APLIKASI ELECTRIC FERTILIZER TERHADAP KERAGAAN TINGGI TANAMAN JAGUNG VARIETAS BISI-18

Maize (Zea mays L.) is a monocotyledons plant (the seeds contain only one embryonic leaf) and it is classified as an important food crop that is widely cultivated in Indonesia. There are several varieties of Zea mays L. and bisi-18 is the variety has chosen in this research because it is a superior variety with 90% growth power. Electric fertilizer (EF) is a tool for transmitting an electric current into the soil to stimulate plant growth (stimulus growth). Fertilization of plants is divided into 2 types, they are chemical fertilization and physical fertilization. The chemical fertilization includes the use of synthetic chemical fertilizers and organic fertilizers, while for physical fertilization is through stimulation of ions in the soil by an electric current. The physical fertilization using by EF tool is expected can reduce the consumption of synthetic chemical fertilizers and optimize the use of organic fertilizers. So, it can be an alternative environmental friendly fertilizers. The purpose of this study was, designing an EF set tool with a DC voltage with electrode plates to stimulate the growth of Zea mays L., designing automatic irrigation system with a soil moisture sensor, and analyzing the growth of Zea mays L. with electric current from the EF tool and compared to control (without EF tool). The EF set tool is carried out at various voltage, there are 10V, 12V, 15V, and 20V. The results showed that 12V voltage had the best variable to stimulate the growth of Zea mays L

ANTIDIABETIC ACTIVITY OF CORN (Zea mays L.) SILK INFUSION In MICE USING GLUCOSE TOLERANCE

Diabetes melitus adalah penyakit metabolik menahun dan dikenal sebagai pembunuh manusia secara diam-diam atau “Silent Killer”. Obat bahan alam di era modern banyak digunakan sebagai alternatif dalam pencegahan dan pengobatan diabetes melitus. Salah satu tanaman yang berkhasiat obat yang dikenal masyarakat dan digunakan sebagai obat tradisional adalah rambut jagung (Zea mays L.). Tujuan penelitian untuk mengetahui pengaruh infusa rambut jagung (Zea mays L.) terhadap kadar glukosa darah mencit putih (Mus musculus L.) jantan menggunakan metode Test Toleransi Glukosa Oral (TTGO). Hewan percobaan dibagi menjadi 5 kelompok. Kelompok kontrol negatif hanya diberikan Na CMC 1%, kelompok positif diberi glibenklamid dengan dosis 0,65mg/KgBB, kelompok perlakuan diberi sediaan infusa rambut jagung dengan konsentrasi 10%, 20% dan 40%. Hasil penelitian menunjukan infusa rambut jagung (Zea mays L.) konsentrasi 10%, 20% dan 40% berbeda signifikan dengan kelompok kontrol negatif ditandai dengan p<0,05 sehingga dapat menurunkan glukosa darah pada mencit putih (Mus musculus L.) jantan yang diinduksi glukosa secara oral. Kata kunci: infusa, jagung, diabetes, glukosa.   &nbsp

EFEKTIVITAS PENGGUNAAN LIMBAH AIR CUCIAN BERAS DALAM MENGURANGI PENGGUNAAN PUPUK NPK MUTIARA TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS (Zea mays L.)

Zea mays L. is one of the food crops that people like because it has a lot of nutritional content. In increasing the growth and production of Zea mays L. plants, it can be done by integrating rice washing water waste with inorganic fertilizers in order to minimize the use of chemical fertilizers. The purpose of this study was to determine the effect of using rice washing water waste in reducing the use of pearl NPK on vegetative growth and production of Zea mays L. plants. This research was carried out at the Greenhouse of the Agrotechnology Study Program, Faculty of Agriculture, Musamus University in June - September 2022 with a cultivation scale in polybaq. The design used was a completely randomized design (CRD) with 7 treatments and 3 replications, namely: K0 = Control; K1=rice washing water without pearl NPK; K2=rice washing water+25% pearl NPK; K3=rice washing water+50% pearl NPK; K4=rice washing water+75% pearl NPK; K5 = rice washing water + 100% pearl NPK; A6= 100% NPK pearl. Parameters observed were: plant height, number of leaves, stem diameter, leaf area, cob weight, cob weight without cob, number of rows of seeds per ear, cob diameter, cob length, and 100 seed weight. Observations were analyzed using the method of variance. If there are significantly different treatments, then proceed with the BNT test at the 95% confidence level. The results showed that the treatment of rice washing water + pearl NPK had a significant effect on the growth and production of Zea mays L.. Based on data from the analysis carried out by treating rice washing water waste + 50 % to 75% Pearl NPK can increase the vegetative and generative growth of corn plants so as to minimize the use of inorganic fertilizers by 25% -50% of the recommended dose. Keywords: Rice washing water, Zea mays L., Pearl NPK Fertilize

RELEASE OF MAIZE [ZEA MAYS L. (WALP.)] OPEN-POLLINATED CULTIVAR MAYORBELA 05

RELEASE OF MAIZE [ZEA MAYS L. (WALP.)] OPEN-POLLINATED CULTIVAR MAYORBELA 0