Andalasian International Journal of Agriculture and Natural Sciences (AIJANS)

Optimization of Producing Zein Clove Leaf Essential Oil Nanoparticles for Their Antioxidant Activities

Mon, 22 Apr 2024 00:00:00 +0700

Essential oils are often also referred to as flying oils produced by plants and usually volatile essential oils at room temperature, one of the essential oils with many uses is clove leaf essential oil (Syzygium aromaticum L). Zein-essential oil nanoparticles were prepared by varying the concentration of clove oil (0, 2, 4, 6, 8, and 20 mg/mL) added to 1.5 mg/mL zein and 1 ml tween 20 and sonicated for 20 minutes. The antioxidant activity of the zein-essential oil nanoparticles formed was tested using the DPPH method. The best antioxidant activity was found in the addition of clove leaf essential oil 8 mg/mL with a percentage of inhibition of 71.13%. Characterization test with a laser beam where the amount of light scattered by the solution. Chemical component analysis using Gas Chromatography Mass Spectrophotometry (GC-MS) showed the presence of 32 compounds with three main compounds, namely trans-?-caryophyllene (46.69%), chavibetol (25.80%) and - humulene (10.84%).

Identification of Weeds on Tea Planting (Camellia Sinensis L.) in Liki Farm Unit, PT. Mitra Kerinci, South Solok Regency

Nugraha Ramadhan, Feristika Pri Dini — Mon, 22 Apr 2024 00:00:00 +0700

One of the plantation products that is a mainstay export commodity and is considered quite strategic in supporting the Indonesian economy is tea. However, in recent years tea production has fluctuated, to keep Indonesia as the world's main tea producer, production problems and intensive efforts that support productivity need to be managed optimally. Tea quality is strongly influenced by environmental factors such as the presence of weeds. Assessment of the types of weeds in tea plants can be done by identification based on morphology. The purpose of this study was to identify weeds in tea plants (Camellia sinensis L.) in the Liki plantation unit at PT. Mitra Kerinci. This activity was carried out in July - August 2022 at PT. Mitra Kerinci, Sungai Lambai, Nagari Lubuk Gadang Selatan, Sangir District, South Solok Regency, West Sumatra Province. Observations were made using descriptive methods. It was concluded that there were 8 families and 14 species of broad-leaf weeds; 1 family and 2 species of Cyperaceae weeds; 1 family and 3 species of Poaceae weeds; and 3 families and 4 species of Filicinae weeds in this tea plantation.

The Influence Of Seed Quantity Per Planting Hole On The Agronomics Of Soybean Variety Dena 1 Under Different Lighting Conditions

Nugraha Ramadhan — Mon, 22 Apr 2024 00:00:00 +0700

Expansion of soybean cultivation by utilizing land beneath tree canopies and adjusting plant populations can be considered as an alternative to increase national soybean production. The objective of this research is to examine the influence of seed quantity per planting hole on the agronomics of soybean variety Dena 1 under different lighting conditions. This study was conducted from August to November 2023 at the Experimental Garden of the Faculty of Agriculture, Andalas University. The experimental design used was a Completely Randomized Design (CRD) with two factors and three replications. The first factor was lighting conditions, while the second factor was the quantity of seeds per planting hole. Soybean plants under unshaded conditions showed the best influence on plant height, stem diameter, as well as an increase in pod number and percentage of filled pods. The interaction between the treatment of seed quantity per planting hole and different lighting conditions influenced the seed weight per plot, where planting two seeds per planting hole under unshaded conditions yielded the best result at 280.56 g.

Effect Of Tamarillo (Solanum Betaceum Cav.) Addition On Physical And Chemical Characteristics Of Yoghurt Produced

Novelina Novelina — Mon, 22 Apr 2024 00:00:00 +0700

Yoghurt is one of the milk-based fermented products, adding fruit juice to yoghurt is part of product innovation, expected to improve quality and consumer liking. This study aims to determine the effect and level of addition of tamarillo juice (Solanum betaceum Cav.) on the characteristics of yoghurt produced. This study used a complete randomized design (CRD) method with 5 treatments and 3 replicates. Data were analyzed using analysis of variance (ANOVA) and Duncan's New Multiple Range Test (DNMRT) at the 5% level. The treatment in this study was the addition of tamarillo juice as much as 0% (A), 5% (B), 10% (C), 15% (D), 20% (E). The results showed that the addition of tamarillo juice to yoghurt had a significant effect on viscosity, color, fat content, ash content, total solids, total lactic acid, and Organoleptic test (color, aroma, taste and consistency), but had no significant effect on protein content, pH value and total lactic acid bacteria. The best formulation was in treatment E (addition of 20% tamarillo juice) with an average viscosity value of 13.03 Cp; color 83.73 ^oHue (Yellow red); protein content 4.11%; fat content 3.29%; ash content 0.59%; total solids 19.17%; total lactic acid 1.04%; pH value 4.52; total lactic acid bacteria 2.3x10⁹CFU/g ; color 4.3 (like); aroma 4.25 (like); taste 4.15 (like) and consistency 4.25 (like).

Utilization Of Palm Palm Industry Liquid Waste For Palm Oil Plantation Land Applications

Sahadi Didi Ismanto, Lisa Rahayu — Mon, 22 Apr 2024 00:00:00 +0700

The research results show that: (1). All liquid waste requirements for land application have been fulfilled properly, even the biodegradation results in anaerobic ponds are much smaller than those required by Environmental Impact Control Agency, (2). Water quality standards in monitoring wells in gardens are based on PP No. 82 of 2001 Class II, BOD-5 and Total Nitrogen do not meet quality standards, but at the resident monitoring well location almost all parameters tested meet quality standards, COD is smaller and even oil and fat are not detected and the Total Nitrogen content is only 2.38 mg/l which has met the requirements. Waste seepage into residents' wells is not significant; (3). The results of plantations that use land applications and non-land applications are different, where the results of gardens that use liquid palm oil mill waste as land applications produce much greater fruit production (average yield is greater/ha 48.28%) than the results of oil palm plantations. (4). The use of fertilizer on land application land was initially greater than on land that did not use land application land, this was because agricultural yields had actually started to decline because they were over 20 years old, but the use of fertilizer was decreasing every year, and (5). The oil content of fresh fruit bunches (FFB) applied to garden land and non-land application shows a difference in oil content, where fresh fruit bunches (FFB) applied to garden land on average have a greater oil content than fresh fruit bunches. (TBS) non land garden application