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Capability of short Vis-NIR band tandem with machine learning to rapidly predict NPK content in tropical farmland: A case study of Aceh Province agricultural soil dry land, Indonesia

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Case Studies in Chemical and Environmental engineering 2024年 9卷

作者： Mustaqimah Devianti Munawar, Agus Arip Sufardi, Sufardi Doctoral Program of Agricultural Science Syiah Kuala University Banda Aceh 23111 Indonesia Department of Agricultural Engineering Faculty of Agriculture Syiah Kuala University Banda Aceh 23111 Indonesia Department of Soil Science Faculty of Agriculture Syiah Kuala University Banda Aceh 23111 Indonesia

Developing a rapid, accurate, and cost-effective method for predicting constituents related to soil nitrogen (N), phosphorus (P), and potassium (K) content is considered substantial. One procedure that can work with these criteria and is currently popularly researched is the visible and near-infrared (Vis-NIR) method. Furthermore, machine learning algorithms have been proven to increase the accuracy and robustness of calibration models developed based on short Vis-NIR spectra. Therefore, the potential of combination using short Vis–NIR band (450–1050 nm) in tandem with machine learning algorithm (k-nearest neighbors (kNN), adaboost, random forest) was investigated and evaluated deeply in this study to predict the soil content of N, P, and K using 122 tropical dry farmland samples of Aceh Province origin, Indonesia. Within the investigated variables, the parameter RPD achieved excellent classification (RPD>4.1) for any application for predicted tropical dry farmland soil samples N, P, and K using min-max normalization followed by the kNN algorithm. The short Vis–NIR tandem with machine learning provided promising calibration predictions of N, P, and K content for agricultural soil dry land, especially from Aceh Province, Indonesia. © 2024 The Authors

关键词： Chemometrics Non-destructive measurement Soil nutrients Spectroscopy

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Enzymatic Synthesis, Characterization, and Application of Sucrose Ester Derived from Palm Kernel Oil Methyl Ester as Food Emulsifier

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SSRN 2024年

作者： Rahmi, Rahmi Kurniasih, Eka Darusman, Darusman Supardan, Muhammad Dani Doctoral Program in Agricultural Science Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Chemistry Faculty of Mathematics and Natural Science Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Soil Science Faculty of Agriculture Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh23111 Indonesia

Sucrose ester (SEs) is an emulsifier that is widely used in many kinds of food products. Its application improves flavor, color, and texture. SEs was synthesized from palm kernel oil methyl ester (PKOME) and sucrose using Candida antarctica lipase enzyme as a biocatalyst. The enzymatic synthesis occurred at 30°C, with a Candida antarctica load of 50 mg, and a stirring speed of 250 rpm. The crude SEs was purified by vacuum filtration and then dried at 35-40°C for 6-8 h. This study aimed to obtain the optimal substrate conversion depending on 2 affecting factors: reaction time and sucrose concentration. Determination of the reaction time was carried out at 2-20 h, and sucrose concentration at 100-1,000 ***-1. The substrate conversion was determined using the refractive index (oBrix value) and then validated with a spectrophotometer-UV. The study found that an optimal substrate conversion of 87.8% had been achieved at a sucrose concentration of 400 ***-1, lasted for 12 h. The characteristics of optimal SEs were as follows: SEs purity was 91.82%, free sucrose was 1.75%, acid value was 2.93%, and free methanol was 0.11%. SEs was an o/w emulsifier with an HLB value of 12.35. The functional groups of SEs were O-H, C-H2, C-H, C=O, and C-O, which differed from substrates. In addition, applying SEs of 0.6% (w/v) in a coconut milk emulsion enriched with cooking oil maintains emulsion stability with a creaming index of 54.30% and a pH of 5.75 for 7 days of storage. © 2024, The Authors. All rights reserved.

关键词： Sugar (sucrose)

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Extraction and characteristic of Dioscorea alata mucilage 3

Extraction and characteristic of Dioscorea alata mucilage

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3rd International Conference on agricultural engineering for Sustainable Agriculture Production, AESAP 2019

作者： Fortuna, D. Mardjan, S.S. Sunarti, T.C. Darmawati, E. Widayati, S.M. Purwanti, N. Doctoral Program in Agricultural Engineering Science Department of Mechanical and Biosystem Engineering Bogor Agricultural University Bogor Indonesia Department of Mechanical and Biosystem Engineering Bogor Agricultural University Bogor Indonesia Department of Agricultural Industry Technology Bogor Agricultural University Bogor Indonesia Bogor Indonesia

关键词： Calcium chloride

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Synthesis of a biocomposite based on Kluwih (Artocarpus camansi) seed starch incorporated with carrageenan as a functional additive and cellulose nanofiber filler

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Hidayat, Fadlan Indarti, Eti Rahmi Arahman, Nasrul Doctoral Program of Agricultural Science Postgraduate School Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Agricultural Product Technology Agriculture Faculty Universitas Syiah Kuala Banda Aceh 23111 Indonesia Atsiri Research Center PUI Universitas Syiah Kuala Jl. Syeh A Rauf No. 5 Darussalam Banda Aceh 23111 Indonesia Department of Chemistry Faculty of Mathematics and Natural Sciences Universitas Syiah Kuala Banda Aceh 23111 Indonesia Department of Chemical Engineering Engineering Faculty Universitas Syiah Kuala Banda Aceh 23111 Indonesia Research Center for Environmental and Natural Resources Universitas Syiah Kuala Jl. Hamzah Fansuri No. 4 Darussalam Banda Aceh 23111 Indonesia

The widespread use of synthetic plastics causes environmental issues because of their nondegradability. In this study, biocomposite from Kluwih seed starch were incorporated with carrageenan and cellulose nanofiber (CNF) to improve their mechanical properties. CNFs were prepared using the TEMPO method with ultrasonication. The variables included starch (1, 1.5, 2 g), carrageenan (3, 4.5, 6 g), and CNF (0.006, 0.12, 0.18 g). The mechanical properties of the biocomposite were optimized using RSM. Zeta potential analysis confirmed the stability of CNFs, and XRD and FTIR analyses revealed improved crystallinity and functional groups. The tensile strength of the biocomposites was 12.08 kgf/mm², which is suitable for sustainable packaging applications. © 2025

关键词： Biocomposite Carrageenan Cellulose nanofiber Kluwih seeds starch Tensile strength

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Interrelations of rainfall and morphometric characteristics in generating geological disasters of Kuranji watershed Padang city

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IOP Conference Series: Earth and Environmental science 2021年第1期708卷

作者： T H A Putra B Istijono Aprisal B Rusman riani A Hakam Adrinal T Ophiyandri Student Doctoral Program Postgraduate Agricultural Science Universitas Andalas Civil Engineering Department Universitas Andalas Soil Science Department Universitas Andalas

The Kuranji watershed is one of the watersheds in the city of Padang, which is currently experiencing development due to rapid population growth. This has resulted in land conversion from areas that have vegetation to built areas such as settlements. This affects the balance of the Kuranji watershed ecosystem and can lead to geological disasters. Therefore an initial analysis is needed in the development of the Kuranji watershed in the future. This study aims to analyse the interrelation of rainfall and morphometric characteristics that have an impact on geological disasters. The data used are data of maximum rainfall and maximum river discharge in the Kuranji watershed from 2009 - 2018. DEM data (30x30) used to calculate morphometric aspects, consisting of linear aspects, area aspects and relief aspects. The calculation of these aspects is done by a Geographic Information System (GIS) approach using ArcGIS 10.6 software. The result shows that the Kuranji watershed has an area of 22469,55 ha with dendritic drainage patterns. The linear aspect reveals that it has 1894 rivers with a total length of 774,6 km. This aspect explains that with the many tributaries, the Kuranji watershed has the potential to cause flooding. Aspects of the area explain that the Kuranji watershed has an elongated shape, steep slope and causes a rapid and large run-off discharge. Drainage density is at medium level with a value of 3,45 (km/km2) which is close to the high category. The higher the drainage density the smaller the chance of water for infiltration and the greater the river discharge. The relief aspect explains that the Kuranji watershed has a height between 0-1860 meters above sea level. Relief ratio and gradient ratio have a value of 0,08. Gradient ratios with high values result in fast and swift flow of surface and river water flow. This has the potential for landslides, channel erosion and river wall erosion. High rainfall, extreme morphometric characteristics, causes the Kuran

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Design of eco-friendly fixed bed dryer based on a combination of solar collector and photovoltaic module

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Nature Environment and Pollution Technology 2019年第1期18卷 21-30页

作者： Mardiyani, Siti Asmaniyah Sumarlan, Sumardi Hadi Argo, Bambang Dwi Leksono, Amin Setyo Doctoral Program of Environmental Studies Brawijaya University Jl. Veteran Malang6514 Indonesia Department of Agrotechnology Faculty of Agriculture University of Islam Malang Jl. MT. Haryono 193 Malang65144 Indonesia Department of Agricultural Engineering Faculty of Agricultural Technology Brawijaya University Jl. Veteran Malang65145 Indonesia Department of Biology Faculty of Mathematic and Natural Science Brawijaya University Jl. Veteran Malang65145 Indonesia

A study to develop a convective eco-friendly fixed-bed solar dryer is presented in this article. The aim of this study was to design an efficient eco-friendly fixed bed dryer using solar collector and solar photovoltaic panel with a forced convective system. The design consists of a V-corrugated solar collector, a centrifugal fan, a solar photovoltaic module (100 WP) and a drying unit in the mini-silo model with five layers. The dryer performance test was conducted in September, October, and November 2017 in Malang, East Java, Indonesia. The observation showed that the temperature of the solar collector and the first layer of the drying unit could reach 40-70°C on a sunny day and 30-50°C in cloudy/rainy conditions. The efficiency of the daily collector varied from 20% to 50%. Based on a multiple regression analysis, it showed that some variables (solar intensity, voltage of photovoltaic panel, air speed around the blower, air collector velocity, collector relative humidity, ambient temperature and relative humidity temperature) significantly influenced the collector temperature. The result of drying simulation using red pepper showed that the design has a potential to be used as an eco-friendly fixed bed convective drying. Based on the empirical model, the drying time needed to reach 12% of moisture content (wet basis), respectively, was 5-6 days for the first tray, 8-9 days for the second tray and 9-10 days for the third tray in rainy season. © 2019 Technoscience Publications. All Rights Reserved.

关键词： Air

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Correction: Optimized framework for evaluating F3 transgressive segregants in cayenne pepper

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BMC plant biology 2025年第1期25卷 300页

作者： Ifayanti Ridwan Muh Farid Feranita Haring Nuniek Widiayani Ahmad Yani Nirwansyah Amier Muhammad Alfan Ikhlasul Amal Jekvy Hendra Nawab Ali Mekhled M Alenazi Mahmoud F Seleiman Willy Bayuardi Suwarno Muhammad Fuad Anshori Department of Agronomy Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agrotechnology Bachelor Study Program Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agrotechnology Master Study Program Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. Agricultural Science Doctoral Program Graduate School Hasanuddin University Makassar 90245 Indonesia. Directorate of Horticultural Protection Agricultural Ministry Jakarta 12520 Indonesia. Department of Biosystems and Agricultural Engineering (BAE) College of Agriculture and Natural Resources Michigan State University East Lansing USA. Department of Plant Production College of Food and Agriculture Sciences King Saud University Riyadh Saudi Arabia. Department of Agronomy and Horticulture Faculty of Agriculture IPB University Bogor 11680 Indonesia. Department of Agronomy Faculty of Agriculture Hasanuddin University Makassar 90245 Indonesia. fuad.anshori@unhas.ac.id.

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Transformative and sustainable insights of agricultural waste-based adsorbents for water defluoridation: Biosorption dynamics, economic viability, and spent adsorbent management

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Heliyon 2024年第8期10卷 e29747页

作者： Das, Koyeli Sukul, Uttara Chen, Jung-Sheng Sharma, Raju Kumar Banerjee, Pritam Dey, Gobinda Taharia, Md. Wijaya, Christian J. Lee, Cheng-I Wang, Shan-Li Nuong, Nguyen Hoang Kim Chen, Chien-Yen Department of Biomedical Sciences Graduate Institute of Molecular Biology National Chung Cheng University 168 University Road Min-Hsiung Chiayi County 62102 Taiwan Doctoral Program in Science Technology Environment and Mathematics Department of Earth and Environmental Sciences National Chung Cheng University 168 University Road Min-Hsiung Chiayi County 62102 Taiwan Department of Medical Research E-Da Hospital Kaohsiung 82445 Taiwan Department of Chemistry and Biochemistry National Chung Cheng University 168 University Road Min-Hsiung Chiayi County 62102 Taiwan Department of Chemical Engineering Widya Mandala Surabaya Catholic University Kalijudan 37 Surbaya 60114 Indonesia Collaborative Research Center for Zero Waste and Sustainability Kalijudan 37 Surabaya 60114 Indonesia Center for Nano Bio-Detection Center for Innovative Research on Aging Society AIM-HI National Chung Cheng University 168 University Road Min-Hsiung Chiayi County 62102 Taiwan Department of Agricultural Chemistry National Taiwan University Taipei 106319 Taiwan

With the progression of civilization, the harmony within nature has been disrupted, giving rise to various ecocidal activities that are evident in every spheres of the earth. These activities have had a profound and far-reaching impact on global health. One significant example of this is the presence of fluoride in groundwater exceeding acceptable limits, resulting in the widespread occurrence of “Fluorosis” worldwide. It is imperative to mitigate the concentration of fluoride in drinking water to meet safety standards. While various defluoridation techniques exist, they often have drawbacks. Biosorption, being a simple, affordable and eco-friendly method, has gained preference for defluoridation. However, its limited commercialization underscores the pressing need for further research in this domain. This comprehensive review article offers a thorough examination of the defluoridation potential of agro-based adsorbents, encompassing their specific chemical compositions and preparation methods. The review presents an in-depth discussion of the factors influencing fluoride biosorption and conducts a detailed exploration of adsorption isotherm and adsorption kinetic models to gain a comprehensive understanding of the nature of the adsorption process. Furthermore, it evaluates the commercial viability through an assessment of regeneration potential and a cost analysis of these agro-adsorbents, with the aim of facilitating the scalability of the defluoridation process. The elucidation of the adsorption mechanism and recommendations for overcoming challenges in large-scale implementation offer a comprehensive outlook on this eco-friendly and sustainable approach to fluoride removal. In summary, this review article equips readers with a lucid understanding of agro-adsorbents, elucidates their ideal conditions for improved performance, offers a more profound insight into the fluoride biosorption mechanism, and introduces the concept of effective spent adsorbent management.

关键词： Adsorption mechanism agricultural waste Bio-sorption Cost analysis Defluoridation Regeneration Spent adsorbent management

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Extraction and characteristic of Dioscorea alata mucilage

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IOP Conference Series: Earth and Environmental science 2020年第1期542卷

作者： D Fortuna S S Mardjan T C Sunarti E Darmawati S M Widayati N Purwanti Doctoral Program in Agricultural Engineering Science Department of Mechanical and Biosystem Engineering Bogor Agricultural University Bogor Indonesia Department of Mechanical and Biosystem Engineering Bogor Agricultural University Bogor Indonesia Department of Agricultural Industry Technology Bogor Agricultural University Bogor Indonesia Indonesia Center for Agricultural Postharvest Research and Development (ICAPRD) Bogor Indonesia

Dioscorea alata (DA) mucilage is classified as water-soluble polysaccharides, which has potential as a source of hydrocolloid. This research was conducted to investigate effects of salt types on water to tuber ratio to produce the most optimal mucilage yield. This research was conducted using Completely Randomized Factorial Design 3 x 5. The DA mucilage was extracted using two factors, i.e., types of salt (without salt, sodium chloride, and calcium chloride) and water to tuber ratios (2:1, 4:1, 6:1, 8:1, and 10:1). The results showed that the types of salt significantly affect (P<0.05) on starch content, but did not have a significant effect on mucilage yield and water content of the mucilage. The water to tuber ratios significantly affected (p<0.05) the mucilage yield and starch content of the mucilage, however it did not affect the water content. Addition of calcium chloride when water to tuber ratio was 4:1 was recommended to produce the optimal mucilage yield (1.58%) with relatively low starch content (7.86%).

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Tourism vulnerability management to support local wisdom conservation in the current agriculture practices (Case: agricultural tourism area in Ngawi Regency, East Java, Indonesia)

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IOP Conference Series: Earth and Environmental science 2021年第1期824卷

作者： B Pujiasmanto I Aliyah N Miladan R Sugiarti Margana D Setyaningrum Department of Agrotechnology Faculty of Agriculture Universitas Sebelas Maret Surakarta Indonesia Department of Regional and Urban Planning Engineering Faculty Universitas Sebelas Maret Surakarta Indonesia Research and Development Centre of Tourism and Culture Research and Community Service Institute Universitas Sebelas Maret Surakarta Indonesia Doctoral Program of Agricultural Science Faculty of Agriculture Universitas Sebelas Maret Surakarta Indonesia

Climate change can cause an increase in the earth's surface temperature and atmospheric CO2. This has an impact on the tourism area based on local agricultural wisdom. The research aims to analyze the level of tourism vulnerability management and formulate tourism vulnerability management strategies to support local wisdom preservation in current farming practices. The method used is mapping, field observations, and interviews with two approaches, namely quantitative content analysis and qualitative content analysis. The results showed that the farming community was only profit-oriented without paying attention to balancing and preserving the natural environment. Most farmers want all agricultural processes to be done instantly or quickly, with higher yields. However, they leave local wisdom values and socio-cultural contexts in managing the rice field environment. One of the components of local wisdom that can still be maintained is the cropping pattern primarily found in the highlands that can still be found. To manage the vulnerability of tourism to support the preservation of local wisdom in current agricultural practices.

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