bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research Progress on Photocurable 3D Printing of Propellants and Explosives
Authors: Tan Bo-Jun , Mo Hong-Chang , Lu Xian-Ming , Duan Bing-Hui , Chen Shao-Li , Liu Ning 
Published: June 2023

Abstract
Compared to the traditional field of propellants and explosives preparation molding technology, photocuring 3D printing which could realize the precise molding and control of propellants and explosives manufacturing performance, and overturn the traditional manufacturing concept of propellants and explosives, had attracted close attention of scientists all over the world and great progress had been made in the field of propellants and explosives. According to the technical characteristics and application direction of photocuring 3D printing, this paper summarizes the research progress of photocurable 3D printing propellants and explosives around the world, analyzes the problems in the research of photocurable 3D printing propellants and explosives, and points out the importance of new adhesives for photocurable 3D printing propellants and explosives. In addition, it also summarizes the development direction and trend of photocurable adhesive, providing a reference for the application of 3D printing technology in propellants and explosives.
Bioactive compound profile of propolis product from Beekeeping (Meliponiculture) in Turi Yogyakarta Indonesia
Authors: Sudaryadi I , Oktaweni F , Pramono I E , Fatikasary K W , Widiawati H , Sutikno  
Published: June 2023

Abstract
Medicinal bio-products have been used all over the world for the treatment and prevention of various ailments, particularly in developing countries where infectious diseases are endemic and modern health facilities and services are inadequate. There is growing evidence in the correlation of the bio-chemical constituents found in medicinal bio-products with their pharmacological activities. One source of natural bioproduct medicine is propolis from the stingless bee. The objective of this research was to analyze the composition of bioactive compunds found in the methanolic extract of raw propolis from the stingless bee farmed in the meliponiculture practice in Turi, Yogyakarta, Indonesia. The raw propolis sample was extracted with methanol by using the soxhlet extractor and the obtained crude methanolic extract was then analyzed using the gas chromatography-mass spectrometry (GC-MS) method. The qualitative analyses of the methanolic crude extract using the GC-MS showed that the profile of the propolis’ chromatogram has different types of high and low molecular weight compounds consisting of 26 bioactive compounds which can be categorized in 3 (three) different groups: terpenoids, phenolic, and steroids. Most of the bioactive compounds are found to be biologically important. Futher research is still needed to further analyze the presence of other various bioactive compounds and to confirm and isolate their individual bio-chemical constituents for treatment of various ailment and the bioprospecting of potential antimicrobial drugs.
Investigating sensory characteristics and consumer preferences of functional beverages made from Tulsi (Ocimum tenuiflorum Linne)
Authors: Ervina Ervina , Marvell Jonathan 
Published: June 2023

Abstract
Tulsi is widely known as a medicinal plant and possesses many health benefits. The pharmacological study regarding the compounds in tulsi has been widely studied, but the sensory characteristic and consumer acceptance of this plant has never been conducted previously. This study aims to investigate the sensory characteristics of functional beverages made from tulsi leaves and to determine which sensory attributes that able to promote consumers’ acceptance. Three samples of tulsi beverages were evaluated by the trained panels (n=14) using Quantitative Descriptive Analysis (QDA) while the acceptance test was assessed by 61 consumers. A total of 27 key attributes of tulsi beverages were generated during the QDA evaluation. All the samples have different sensory characteristics. The aroma and taste of ginger, citrus, lemongrass, basil, mint, honey, sweetness, and aftertaste of the hot sensation of ginger were positively associated with consumers’ liking. In contrast, bitter aroma, watery-like texture, astringent and astringent aftertaste were contribute to consumers’ disliking. This study could be used as a preliminary study for developing new functional beverage products from tulsi leaves by considering the sensory characteristic and key attributes for the liking of tulsi beverages.
Development of tempeh made from soybeans, black-eyed beans, and winged beans
Authors: Maitresya Loveggie Bella , Surya Reggie 
Published: June 2023

Abstract
In early 2022, there was a significant increase in the price of imported soybeans, which resulted in an increase in prices of tempeh, a fermented soyfood from Indonesia. A study was conducted to compare the quality of tempeh made with a combination of several soybean alternatives, namely black-eyed beans and winged bean seeds. In this study, proximate analysis, determination of antioxidant activity, and sensory evaluation were carried out on 4 sample formulations, namely P0 (control); P1 (50% soybeans + 50% black-eyed beans); P2 (50% soybeans + 50% winged bean seeds); and P3 (50% soybeans + 25% black-eyed beans + 25% winged bean seeds). Based on the results obtained, it was found that sample P2 obtained the highest protein content and antioxidant activity, whereas control tempeh (sample P0) obtained the highest sensory acceptance/assessment score. According to the results of the study, the tempeh formulation which offers the best quality was sample P2 (formulation of 50% soybeans and 50% winged bean seeds).
Microencapsulation effect of natural dye extracts of spirulina platensis, dragon fruit peel, and pumpkin skin on antioxidant activity, color stability and particle size
Authors: Handayani S S , Bastian Februadi , Mahendradata Meta 
Published: June 2023

Abstract
The nature of natural dyes added to food raw materials is easily damaged during processing and exposure to light. This study aimed to determine the effect of microencapsulation on antioxidant activity, color stability, and particle size of the natural dyes produced. This study used three types of commodities to be extracted with the addition of a coating, i.e. spirulina platensis using maltodextrin and carrageenan; dragon fruit peel using maltodextrin and gum arabic; and pumpkin skin using maltodextrin and gelatine. The tests observed were antioxidant activity, changes in color stability with light and without light parameters, and particle size. The results showed that the antioxidant activity of natural dyes after microencapsulation increased the IC50 value. IC50 value of spirulina platensis extracts increased from 2164.75 ppm to 4026.96 ppm; dragon fruit peel extracts increased from 688.91 ppm to 2403.71 ppm, and pumpkin skin extracts increased from 1025.62 ppm to 4327.92 ppm. Color stability of spirulina extract stored for 10 days showed unstable color. Color stability of fruit peel extract storaged for 10 days showed less stable, whereas color stability of pumpkin skin extract is stable. While the color stability without the light on the Spirulina platensis extract during stored for 10 days is stable, whereas color stability of the dragon fruit peel extract and pumpkin skin extract were unstable. The particle size of each microencapsulates meet the microencapsulated particle size requirements.
Hydraulic analysis of rainfall utilization on acid sulphate soil leaching in lowland irrigation Area of Unit Tamban Central Kalimantan
Authors: Sari D M , Karlina  , Jayadi R 
Published: June 2023

Abstract
Unit Tamban is one of the tidal swamp irrigation areas located in the ex-PLG area, precisely in Block D of Central Kalimantan. The productivity of Unit Tamban is very low, with only one planting every year due to the low water quality in the canal and the unfinished land reclamation process. The volume of freshwater from the tide is only 229,788 m3, while the leaching of acidic sulphate soils requires 248,000 m3. Unit Tamban has a dominant hydro-topography of types B and C, so some agricultural land uses rainwater as an irrigation water supply. The study aimed to examine the effect of rain discharge on the existing irrigation network as an additional water supply in the leaching of acidic sulphate soils in the swamp irrigation area of Unit Tamban. This study used dependable rainfall for calculating rain discharge and one-dimensional hydraulic modelling using HEC-RAS. The water volume in rainy conditions can meet the needs of acid sulphate soil leaching, while there is a deficit of 7% in existing conditions. The availability of dependable rain can meet the need for acid sulphate soil leaching so that the reclamation process can run well.
Amino acid analysis and physiological properties of protein concentrate made from Black Soldier Fly Larvae (Hermetia illucens)
Authors: Loho Luna , Lo Diana , Romulo Andreas 
Published: June 2023

Abstract
Food waste continues to increase as the population increases. The buildup of food waste can cause environmental pollution and imbalance in the food system. With the potential for various problems that can be caused by food waste and animal husbandry activities, the use of Black Soldier Fly (BSF) larvae is expected in helping organic waste decomposition, as well as becoming an alternative protein source. Therefore, this study aims to study the amino acid profile and the quality of protein concentrate produced from BSF. The amino acid profile of BSF larvae, the protein content, foaming capacity and stability, and emulsion capacity and stability of protein concentrate made from BSF larvae were determined. Based on the results of this study, it was found that BSF larvae contains complete essential amino acid. Furthermore, it was also found that the protein concentrate made from BSF larvae was 79.94 ± 0.49%. BSF larvae protein concentrate has a good ability in forming and maintaining foam, but has a poor ability in forming and maintaining emulsion if compared to bovine serum albumin.
Early identification of “Gudeg” product characteristics in High Barrier Retort Grade (HBRG) packaging
Authors: Amri A F , Kusumaningrum A , Praharasti A R , Amdani R Z , Suratno  , Siswoprayogi  , Susanto A , Nurhikmat A , Darmawan G 
Published: June 2023

Abstract
Food packaging is needed to reduce the risk of food spoilage caused by physical, chemical, and biological factors. Based on the recent development, it is necessary to use a type of packaging that can be applied as food packaging while still having the durability to meet the feasibility level of the sterilization process. This study aims to identify the character of gudeg packaged with HBRG packaging procedure. In this study, the heat penetration, proximate and metal contamination analysis were done as an initial identification step for the characteristics of the gudeg in HBRG packaging. In this study, two variants of gudeg were made, namely egg gudeg and non-egg gudeg. The results obtained in this study are gudeg products packaged in HBRG packaging with a net product weight of 235 g per package. The lethality value of egg gudeg is 3.51 minutes and 4.94 minutes for non-egg gudeg. The energy value of non-egg gudeg and egg gudeg in HBRG packaging is 149.38 kcal/100g and 160.25 kcal/100g respectively. The metal contamination analysis being done in this study has stated that no heavy metal contamination was detected in all variants of products. HBRG packaging procedure can be applied for gudeg by following food safety requirements.
Comparison of soxhletation and Microwave Assisted Extraction method for extracting polyphenols in cacao pod husks (Theobroma cacao L.)
Authors: Darasia  , Mahendradatta M , Hasizah A , Rahmaniar  
Published: June 2023

Abstract
Cacao pod husks (Theobroma cacao L.) are waste from cacao processing. They contain polyphenolic compounds that are obtained by extraction. The most commonly used extraction methods are maceration and soxhletation. However, this method has disadvantages such as long extraction time and high solvent requirements. This study aimed to compare the soxhletation and Microwave-assisted extraction (MAE) extraction methods on cacao pod husks. The parameters observed were total phenol, yield, moisture content, and antioxidant activity. The results showed that the soxhletation was significantly different from the MAE in total phenol, antioxidant activity, and water content. The results of extraction using MAE produced the highest total phenol content of 6.473 mg GAE/g with antioxidant activity of 27.2 μg/mL and moisture content of 13.5%.
Optimization of concentration and exposure time of polytetrafluoroethylene (PTFE) for the development of hydrophobic coating of drying chamber of spray dryer
Authors: Rahman N F N N A , Hashim H , Zubairi S I 
Published: June 2023

Abstract
Modelling was applied using response surface methodology (RSM) and central composite rotatable design (CCRD) in order to establish the optimum conditions for applying PTFE on borosilicate glass to create a hydrophobic surface coating. Two experimental operating conditions of concentration and exposure time of polytetrafluoroethylene (PTFE) were optimized, obtaining high contact angle value, and showed high hydrophobic characteristics for PTFE-coated plate. Multiple linear regression analysis was implemented to develop a second-order polynomial model for the response. Results indicated that the most significant (p<0.05) factors influencing the contact angle value of the PTFE-coated plate were the main effect of concentration of PTFE. When the PTFE concentration increases, the plate’s contact angle also increases. The optimum conditions to maximize the value of contact angle (113.23°) for hydrophobic characteristics were a PTFE concentration of 9.17% and a PTFE exposure time of 6 minutes. The experimental results met what was predicted, indicating the model suitability for hydrophobic conditions optimization for the plate. This research indicated a good optimization of a PTFE solution in developing hydrophobic surface on a PTFE-coated plate.
The occurrence of doxycycline residue in raw dairy milk from Malang and Padang Panjang, Indonesia
Authors: Widiastuti R , Martindah E 
Published: June 2023

Abstract
Antibiotic residue in milk has a negative impact on human health. The objective of this study was to determine the presence of doxycycline residues in fresh dairy milk and to evaluate its dietary intake to Indonesian population through milk consumption. Ninety milk samples were collected from the District of Malang (East Java Province) and sixty-six milk samples from Padang Panjang City (West Sumatera Province). All samples were analyzed for doxycycline residue using high-performance liquid chromatography (HPLC). The estimated daily intake (EDI) was determined by multiplying the mean concentration of antibiotics and the average daily milk consumption dividing it by the weight of population target. The occurrence of doxycycline residue obtained in raw milk samples was 36.67% for samples from Malang and 12.12% for samples from Padang Panjang. The range and average concentration for doxycycline residue in milk samples were 44.8-557.2 ng/g and 203.0 ng/g for samples from Malang and 14.2-64.5 ng/g and 30.1 ng/g for samples from Padang Panjang, respectively. Samples from Malang shows the highest EDI values of doxycycline both for adult, and children population and demonstrated the toxicological risk of consumption doxycycline together with the present other types or groups of antibiotics residue in milk or other types of foods. The results obtained show that, to prevent the negative effects of antibiotic residues on human health, the presence of antibiotic residues in raw dairy milk still needs to be monitored regularly.
The development of Aloe vera-based edible film with the addition of sago starch and glycerol for food packaging
Authors: Affandi M S S , Utomo A R , Setijawaty E , Darmoatmodjo L M Y D , Jati I R A P 
Published: June 2023

Abstract
The edible film is a thin sheet material made of carbohydrates, protein or fat compounds. Research on the development of edible film is promising due to the increased plastic waste, which could disturb the environmental balance. The biodegradable nature of edible film provides an environmental-friendly material for packaging. Nevertheless, creating an edible film with similar properties to plastic will require extensive research. This research aims to develop Aloe vera-based edible film with the addition of sago starch as a texture enhancer and glycerol as a plasticizer and investigate the effect of different concentrations of sago starch on the physicochemical properties of edible film. In this research, six different concentration of sago starch was applied, which are 2.5%; 3%; 3.5%; 4%; 4.5%; and 5% (w/w). Each treatment was repeated four times. The result shows that the increase of sago starch concentration could increase the tensile strength and percent of elongation of edible film. On the contrary, the moisture content, water activity, and water vapor transmission rate (WVTR) were decreased. The range of tensile strength, percent of elongation, moisture content, water activity, and WVTR were 0.0254-0.4827 N/cm2, 46.67%-61,79%, 13.39%-16.65%, 0.559-0.636, and 5.6460-10.0810 g/m2/hour, respectively.
The effect of consumer knowledge and perceptions on the purchase decision of chocolate with sustainability label
Authors: Muhammad D R A , Anandito R. B K , Fauza G , Saputri L M 
Published: June 2023

Abstract
This study aims to determine the effect of knowledge, environmental perception, quality perception and price perception on the decision to buy of chocolate product with sustainability label. An internet survey was used to collect data from 406 respondents of Indonesian people with an age range of 15-40 years and had consumed chocolate bars. The technique used in this study was a non-probability sampling technique with a purposive sampling approach. The analytical method used in this study was quantitative analysis, namely multiple linear regression analysis. This analysis includes validity and reliability tests, multiple regression analysis, hypothesis testing with t test and F test, and analysis of the coefficient of determination (R2). The result shows that the knowledge variable (X1) had no partial effect on the decision to buy chocolates with sustainability label (Y). However, for the environmental perception variable (X2), the quality perception variable (X3), and the perception variable. price (X4) had a positive and significant effect on the decision to buy chocolate bar products with sustainability label (Y). In addition, knowledge, environmental perception, quality perception, price perception simultaneously had a positive effect on the decision to buy chocolate bar products with sustainability label. The influence of the four variables on the decision to buy chocolate bars with sustainability label was obtained from the analysis of the coefficient of determination (R2), which was found at 55.1%. While the remaining 44.9% was affected by other variables outside the four variables studied in this study.
Gelatin methacryloyl and Laponite bioink for 3D bioprinted organotypic tumor modeling
Authors: de Barros Natan Roberto , Gomez Alejandro , Ermis Menekse , Falcone Natashya , Haghniaz Reihaneh , Young Patric , Gao Yaqi , Aquino Albert-Fred , Li Siyuan , Niu Siyi , Chen RunRun , Huang Shuyi , Zhu Yangzhi , Eliahoo Payam , Sun Arthur , Khorsandi Danial , Kim Jinjoo , Kelber Jonathan , Khademhosseini Ali , Kim Han-Jun , Li Bingbing 
Published: June 2023

Abstract
Three-dimensional (3D) in vitro tumor models that can capture the pathophysiology of human tumors are essential for cancer biology and drug development. However, simulating the tumor microenvironment is still challenging because it consists of a heterogeneous mixture of various cellular components and biological factors. In this regard, current extracellular matrix (ECM)-mimicking hydrogels used in tumor tissue engineering lack physical interactions that can keep biological factors released by encapsulated cells within the hydrogel and improve paracrine interactions. Here, we developed a nanoengineered ion-covalent cross-linkable bioink to construct 3D bioprinted organotypic tumor models. The bioink was designed to implement the tumor ECM by creating an interpenetrating network composed of gelatin methacryloyl (GelMA), a light cross-linkable polymer, and synthetic nanosilicate (Laponite) that exhibits a unique ionic charge to improve retention of biological factors released by the encapsulated cells and assist in paracrine signals. The physical properties related to printability were evaluated to analyze the effect of Laponite hydrogel on bioink. Low GelMA (5%) with high Laponite (2.5%–3.5%) composite hydrogels and high GelMA (10%) with low Laponite (1.0%–2.0%) composite hydrogels showed acceptable mechanical properties for 3D printing. However, a low GelMA composite hydrogel with a high Laponite content could not provide acceptable cell viability. Fluorescent cell labeling studies showed that as the proportion of Laponite increased, the cells became more aggregated to form larger 3D tumor structures. Reverse transcription-polymerase chain reaction (RT-qPCR) and western blot experiments showed that an increase in the Laponite ratio induces upregulation of growth factor and tissue remodeling-related genes and proteins in tumor cells. In contrast, cell cycle and proliferation-related genes were downregulated. On the other hand, concerning fibroblasts, the increase in the Laponite ratio indicated an overall upregulation of the mesenchymal phenotype-related genes and proteins. Our study may provide a rationale for using Laponite-based hydrogels in 3D cancer modeling.
Application of different MPPT algorithms for PMSG-based grid-connected wind energy conversion system
Authors: Raj Sonali , Kumar Ramesh 
Published: June 2023

Abstract
Renewable energy sources such as wind energy sources have become the most prominent area of research work over the last two decades. Extraction of maximum power and lowering of THD are still the main issues during the integration of wind energy sources to the grid due to the noncontrollable variability of wind energy sources and the application of power electronic devices as interfacing devices. The main objective of this paper is to utilize modern optimization techniques for extracting maximum power points and implementing a Multilevel inverter to obtain minimal THD. This paper has introduced Improved Grey Wolf Optimization with Levy Flight for tracking maximum power from WECS. This Levy flight concept is applied in combination with the improved hunting process of GWO for providing an efficacy solution and a high rate of convergence through global tracking. Distinct MPPT algorithms such as Perturb and Observe (P&O), Grey Wolf Optimization (GWO), and Levy Flight Grey Wolf optimization (LGWO) are presented, simulated, and analyzed using MATLAB/SIMULINK. These algorithms have been compared based on quantitative analysis to examine the stability, figure out performance, and verify the best algorithm among the proposed algorithms. The consequences of the comparison demonstrated the supercilious characteristic of LGWO in the matter of tracking GMPP, rate of convergence, and the time to catch GMPP. The multilevel inverter is utilized as an interfacing unit between wind energy sources and the grid. This power electronic-based multilevel inverter is the main source of harmonic generation. This harmonic has been reduced to 5.5% (THD) due to the application of a 23-level Cascaded H-bridge multilevel Inverter using MATLAB/SIMULINK software.