Evaluation of two brazilian native yeast strains (Pichia kudriavzevii) in craft beer

Beer production is an ancient biotechnological process and since yeast as discovered to be responsible for the transformation of barley wort into beer, studies have been carried out with the aim of understanding the behavior of these microorganisms. This work aimed to study the application of two strains of yeasts of the species Pichia kudriavzevii, isolated in the Brazilian Midwest for the production of craft beer and to analyze the occurrence of bioaromatization, with the production of volatile organic compounds (VOC) and to evaluate the sensory perception of the results with untrained end consumers through a quick sensory methodology called Check All That Apply (CATA). For this purpose, three batches of beer were produced and inoculated with commercial yeast (Saccharomyces cerevisiae, the control) and two strains of the same species, called Pichia kudriavzevii BB1 and Pichia kudriavzevii BB2. A total of 28 volatile organic compounds that differentiated the control of the Pichia BB1/BB2 group were detected, being 20 esters, 2 alcohols, 5 carboxylic acids and 1 hydrocarbon. There was no difference among the Pichia kudriavzevii BB1 and BB2 samples (p>0.05) in the sensory analysis using the CATA methodology. It was possible to distinguish two clusters between the tasters according to the habit of consuming craft beer, and those who consumed frequently, assigned a higher score in the hedonic test. It was concluded that Pichia kudriavzevii BB1 and BB2 influenced the beer bioaromatization, improving the acceptance test score with the tasters.

Development of muffins with green pea flour and their physical and sensory evaluation and essential amino acid content

ABSTRACT: Wheat flour (WF), pea flour (PF) and whole wheat flour (WWF) were mixed in different ratios by applying a simplex-centroid mixture design, in order to evaluate the impact of these combinations on the physical and sensorial properties of muffins. The interaction between WF and WWF produced muffins with brighter crusts and muffins prepared with higher ration of PF were harder. The ranking test was performed with the objective of identifying the most preferred muffin experiments according to the flavor attribute. The experiments with the lowest ranking scores were selected and submitted to the acceptance test. In the acceptance test, the attributes of color, taste, texture and overall acceptance were evaluated, where muffins obtained scores higher than 7 (“moderately liked”), indicating good acceptance of all experiments. The experiment (a) (80% of WF, 10% of PF and 10% of WWF) was chosen for presenting the highest set of scores.

Substitusi Tepung Ubi Jalar Ungu dan Tepung Tempe pada Bolu Cukke Merupakan Alternatif PMT untuk Ibu Hamil dan Balita

Supplementary food, especially for vulnerable groups such as pregnant women and toddlers, is one strategy in dealing with nutritional problems, especially during the COVID-19 pandemic. The aim of the study was to determine the acceptability of Bolu Cukke with purple sweet potato flour and tempeh flour substitutes. Experimental research was conducted at the Food Technology Laboratory, Department of Nutrition, Poltekkes, Ministry of Health Makassar with a total of 50 panelists in 2019. The nutritional content was analyzed using the Kjhedal method for protein, gravimetry for fat, and titrimetry for carbohydrates. Acceptance test was analyzed using Kruskal-Wallis and Mann-Whitney test with 95% confidence level. The results showed that the color and aroma of the four sample groups were different (p=0.000 and p=0.028), while there was no difference in texture and taste. Based on the nutritional content, group C had the highest protein content, group A had the highest fat content while group D had the highest carbohydrate content.

PENGEMBANGAN SISTEM INFORMASI LAYANAN PPDB PADA YAYASAN SABILILLAH SAMPANG MADURA

Untuk meningkatkan peran Pendidikan dalam sekolah diperlukan layanan yang mendukung dalam mewujudkan Pendidikan sekolah yang dapat membangun karakter bangsa. Penerimaan perserta didik Baru merupakan salah satu layanan Pendidikan. Pelaksanaan PPDB tahun 2021 tentu berbeda dari tahun-tahun sebelumnya. Pelaksanaan PPDB tahun sebelumnya masih manual dan dilakukan secara madiri setiap sekolahan. Hal tersebut menjadi permasalahan ketika mengelolah data pendaftaran seluruh sekolah secara terpusat akan menjadi sulit sehingga mengakibatkan keterlambatan hasil pengumuman dan pelaksanaan proses belajaran mengajar karena pengelolahan yang lambat. Pihak yayasan berharap meningkatkan pelayanan pendataran peserta didik Baru dengan mengintregrasikan seluruh pendaftaran secara terpusat. Oleh karena itu penelti bermaksud meningkatkan layanan pendidikan sekolah untuk pelayanan pendaftaran perserta didik baru secara daring dengan mengembangkan Sistem Informasi Pendaftaran Peserta Didik Baru untuk meningkatkan layanan pendidikan pada Yayasan Sabilillah Sampang untuk Sekolah RA, MI, SMP, dan SMA sehingga dapat meningkatkan layanan pendidikan pada sekolah tersebut. Model perancangan dan pembangunan pengembangan perangkat perangkat lunak dengan konsep waterfall, yang secara umum memiliki tahapan: identifikasi kebutuhan sistem, study literature, pengumpulan data, analisa dan desain sistem, implementasi sistem, pengujian sistem dan target luaran. Selain itu peneliti akan melakukan evaluasi dan monitoring sistem informasi yang digunakan. Penelitian ini menghasilkan 10 kebutuhan fungsional dan desain dan perancangan menggunakan notasi diagram Unified Modelling Language (UML), dan menghasilkan sebuah sistem yang akan di uji. Pengujian black box menghasilkan hasil implementasi sistem 100% valid. Pengujian User Acceptance Test (UAT) mendapatkan hasil 100% sistem dapat diterima dan digunakan oleh pengguna.

Virtual Campus Tour Application through Markerless Augmented Reality Approach

Augmented Reality (AR) technology has been widely used on campus tours by universities all around the world. However, the students that stay very far away do not have a chance to visit around the campus. Also, the information that is available on the official website is static, resulting in the visitors feeling less engaged with the information. Hence, the virtual campus tour application using the markerless AR technology, namely AR-UTHM Tour is proposed to be developed on the Android mobile-based platform to visualize the buildings and facilities that are available in the university, specifically Universiti Tun Hussein Onn Malaysia (UTHM). This approach allows the users to visualize the 3D models by pointing the camera at any flat surface. Then, the feature point will be generated to generate a virtual plane. The information about the facilities was obtained from the UTHM official website and the 3D models of the buildings were referred to the floor plan and the actual images. The user acceptance test has been conducted on 30 students of UTHM using Technology Acceptance Model (TAM). The result shows that more than 50% of the respondents have successfully executed the AR session without any error. Overall results show that the users are satisfied with the AR-UTHM Tour application. In conclusion, this application is suitable to be used as a medium to introduce and promote UTHM virtually. Future improvements in terms of detailing the aesthetic of the 3D model will be taken into consideration.

DEVELOPMENT OF DIES WITH DIFFERENTIATED CLAMP FOR CUTTING BLANKS FOR PRECISION STAMPING

A large contribution to the final cost of machine-building products is made by the efficiency of blank production, in which a waste-free shear cut is used. The most promising for the implementation of the method of shear cutting are dies with a differentiated clamping of rolled products. The aim of the work is to develop a new die design with a differentiated clamping of rolled products with high technical and economic characteristics and recommendations for the design of such equipment. On the basis of the developed graph of constructions of dies with a differentiated clamping of rolled products, design features have been identified, which made it possible to create a new die design. Compared with the known structures, in the stamp of the DSEA structure, the transverse dimensions and weight are reduced by an average of 25%, and the height of the open stamped space – by 10%. In the process of dividing in the vertical plane, a constant position of the rolling axis is ensured. The transfer of force to the clamp through the rolling is excluded. The stamp has high rigidity. The stamps of the DSEA design have been introduced at the Odessa PJSC "Stroygidravlika". The economic effect of the implementation was 100000 UAH. Acceptance test results showed that the dies of the new design are efficient and reliable in operation. The quality of the cut workpieces corresponds to the quality indicators of the workpieces cut on modern similar equipment. On the basis of theoretical analysis, experimental studies and operating experience of dies with differential clamping of rolled products, known and formulated new recommendations for the design of such dies. The main ones are: it is necessary to provide a differentiated clamping of rolled products on both sides of the separation plane, subject to the condition that the clamping force should be one and a half times greater than the cutting force; the die body is preferably box-shaped to compensate for thrust forces and torsional moments of forces; the power parts of the stamp must be made in a closed form with stiffening ribs to ensure strength under cyclic stress conditions.

Aplikasi Pengelolaan Persediaan Bahan Pada Usaha Kecil Menengah Pakaian Jadi

Clothing is one of the basic or primary needs. With the influence of clothing fashion that continues to grow, many Small and Medium Enterprises (SMEs) have sprung up engaged in the clothing sector. SMEs are one of the driving forces of the Indonesian economy. SMEs engaged in the clothing sector are businesses that produce apparel. The materials used in the manufacture of clothing also vary, so that inventory management and material requirements planning are essential processes in the manufacture of clothing. In this study, a simple mobile application was developed that can be used for material inventory management for SMEs. The primary function of this application is to record materials (inventory) and plan production needs using the Reorder Point (ROP) method. The Reorder Point (ROP) method is an order limit point helpful in knowing when a company holds an order. Program development using Android Studio IDE with Flutter framework and Dart programminglanguage. The results of functional testing on this application are 90% achieved following the expected results. The user acceptance test concludes that this application has the potential to facilitate SMEs in managing the inventory of material.

Analisis Performa Take Off Engine CFM56-7B Pada Thrust Tipe 26300 Lb

Penurunan performa engine dalam beberapa kondisi memungkinkan engine tidakdapat lagi di-maintain untuk mencapai performa yang disyaratkan. Menurut CFM masalah ini dapat diatasi dengan menurunkan versi (Thrust Rate) engine, dengan begitu engine tersebut tetap dapat beroperasi dengan standar performa yang lebih rendah dari versi awal.Dalam Tugas akhir ini penulis membahas perbandingan performa take-off engine CFM56-7B dengan konfigurasi thrust rating 26300 lbs. Perhitungan performa dilakukan dengan pengolahan data Test Cell Result menggunakan formula pada Engine Shop Manual – 003 untuk mengetahui seberapa besar perbedaan yang terjadi pada kedua konfigurasi thrust rating tersebut. Pada perhitungan performa take-off engine CFM56-7B dengan konfigurasi thrust rating 26300 lb berdasarkan formula dari Engine Shop Manual-003 Engine Acceptance Test adalah Konfigurasi thrust rating 26300 lb menghasilkan thrust sebesar 26920 lb. Nilai SFC yang didapatkan untuk thrust rating sebesar 0.3885 dengan SFC margin -5.3% dan 0.382. EGT yang dihasilkan engine sebesar 905.9 ºC dan EGT margin 17.1 ºC.

Acceptance Ratio Analysis in Grid-Connected Photovoltaic System: Is There Any Difference Between DC and AC?

The performance status of a grid-connected photovoltaic (GCPV) system is denoted by performance indices, namely performance ratio, capacity factor, and even through power acceptance ratio (AR), as documented in Malaysia Standard (MS) procedures for acceptance test of GCPV testing and commissioning (TNC). Even though AR analysis can be either on the DC or AC side, the MS TNC procedures implemented analysis on the AC side. Therefore, the question arises whether there is any significant difference when using AC AR analysis compared to DC AR analysis in evaluating the system performance. Thus, this paper evaluates the differences between applying DC AR analysis and AC AR analysis in accessing the performance of the ten kWp GCPV system in Malaysia. The AR analytical analysis employed the 2019 one-year historical data of solar irradiance, module temperature, DC power, and AC power. The results demonstrated that the monthly AC AR were consistently lower than DC AR with a percentage difference of approximately 3%. The percentage discrepancy was due to the variation of actual inverter efficiencies compared to the declared constant value by the manufacturer used in the AR prediction model. These findings have verified a significant difference between DC AR analysis and AC AR analysis. Most importantly, this study has highlighted the significance of AC AR analysis compared to DC AR analysis as a tool to evaluate GCPV system performance because AC AR has taken an additional factor into consideration, which is the inverter efficiency variation.