Analisis Protein Pada Rinuak, Pensi dan Langkitang dengan Spektrofotometri UV-Vis

2019 ◽  
Vol 4 (2) ◽  
pp. 119
Author(s):  
Sandra Tri Juli Fendri ◽  
Ifmaily Ifmaily ◽  
Sylda Rakmah Syarti
Keyword(s):  
Protein Content ◽  
Economic Value ◽  
Protein Analysis ◽  
Animal Protein ◽  
The Public ◽  
Protein Sources ◽  
Biuret Method ◽  
Uv Visible ◽  
532 Nm

<p><em>Pada penelitian telah dilakukan mengenai analisis protein pada ikan rinuk (Psilopsis sp), pensi (Corbicula moltkiana) dan langkitang (Brotia testudinaria). Ikan rinuak, pensi dan langkitang merupakan hewan yang kaya protein, hidup di danau dan memiliki nilai ekonomi yang tinggi serta banyak dikonsumsi oleh masyarakat. Penelitian ini bertujuan untuk menentukan kadar protein pada ketiga komoditas tersebut. Penentuan kadar proteinmenggunakan metode biuret yang diukur dengan spektrofotometer UV-Visibel pada panjang gelombang 532 nm. Kadar protein pada ikan rinuak adalah 42,3%, pensi 34,5%, dan langkitang 27,5%. Berdasarkan hasil penelitian ditemukan bahwa kandungan protein tertinggi diperoleh pada ikan rinuak Based on the research that has been done, it can be concluded that the highest protein is found in rinuak fish.</em></p><p> </p><p><em>A research about protein analysis in rinuak fish (Psilopsis sp), pensi (Corbicula moltkiana) and langkitang (Brotia testudinaria) has been done. Rinuak fish, pensi and langkitang are animal protein sources that live on the lake and have high economic value and are consumed by the public. This study aims to determine the levels of protein in the three commodities. Determination of protein content in rinuak fish, pensi and langkitang was carried out using the biuret method which measured by UV-Visible spectrophotometer at a wavelength of 532 nm. Protein content in rinuak fish were 42.3%, pensi were 34.5%, and langkitang were 27.5%. Based on the research that has been done, it can be concluded that the highest protein is found in rinuak fish.</em></p>

scholarly journals PENGOLAHAN KOTORAN SAPI DENGAN TEKNOLOGI BIOGAS REAKTOR KECIL

2019 ◽  
Vol 10 (2) ◽  
pp. 123-132
Author(s):  
Hermain Teguh Prayitno
Keyword(s):  
Large Volume ◽  
Alternative Energy ◽  
Processing Time ◽  
Economic Value ◽  
Laboratory Scale ◽  
Cow Dung ◽  
Reference Treatment ◽  
The Public ◽  
Biogas Process

ENGLISHResearch on alternative energy and fertilizer has been done and applied, but the public not interest yet to make this alternative energy and fertilizer. This is due to the huge costs, the process is complicated, and low economic value . Biogas processing, liquid fertilizers and solid. If the large volume of water mix will increase the volume of the reactor and the implications for the huge cost . The research objective was to determine variations in the sample which is capable of representing the processing of the biogas process and product stability. The method used in laboratory scale experiments and determination of the best results using factor analysts . The results of the research is reactor B and A that can be used as a reference treatment that produces biogas manure optimal, and the volume of 0.56 liters of biogas per one kilogram of cow dung with a processing time of 38 days. INDONESIAPenelitian mengenai energi dan pupuk alternatif sudah banyak dilakukan dan diterapkan, akan tetapi minat masyarakat untuk membuat energi dan pupuk alternatif ini belum ada. Hal ini disebabkan oleh biaya yang besar, prosesnya yang rumit, dan nilai ekonominya rendah. Pengolahan biogas, pupuk cair dan padat. Jika dengan volume campuran air yang besar akan membesarkan volume reaktor dan berimplikasi pada besarnya biaya. Tujuan penelitian adalah untuk mengetahui variasi sampel mana yang mampu mewakili proses pengolahan dengan kesetabilan proses dan produk biogas. Metode yang digunakan percobaan skala laboratorium dan penentuan hasil terbaik menggunakan analis faktor. Hasil penelitian yaitu reaktor B dan A yang dapat digunakan sebagai acuan pengolahan kotoran sapi yang menghasilkan biogas optimal, dan volumenya 0,56 liter biogas setiap satu kilogram kotoran sapi dengan waktu pengolahan 38 hari.

scholarly journals Penilaian Jasa Wisata Kebun Binatang Bumi Kedaton Resort Di Bandar Lampung Dengan Pendekatan Metode Biaya Perjalanan

2017 ◽  
Vol 5 (2) ◽  
pp. 102 ◽  
Author(s):  
Ade Prenada ◽  
Samsul Bakri ◽  
Susni Herwanti
Keyword(s):  
Economic Value ◽  
P Value ◽  
Tourist Attractions ◽  
Travel Costs ◽  
The Public ◽  
Dependent Variables ◽  
To Come ◽  
The Cost ◽  
Tourism Services

Tourism object Bumi Kedaton Resort (BKR) is one of the tourist attractions that can be found in the Province of Lampung and opened to the public in 2009 so that the unknown diversity of attitude necessary for a visitor management strategy from BKR to be able to attract visitors because of competition in the world tourist attractions then increasingly need to give satisfaction to the visitor so that visitors wishing to come back. Therefore need to do research to find out the value of tourist services BKR and economic characteristics of visitors. Economic value of tourism services can be found using the method of travel expenses. The research was carried out in December 2014-February 2015 by doing the interview and questionnaire distributed directly to the respondent as much as 99 people. Sampling of respondents do with inccidental sampling methods respondents who happened to be there on site research with sampling techniques in a non random sampling because not all individuals in the population earn the same opportunities to provide samples. Sampling is done starting at 09:00am-4:00 pm WIB each day and by the time the school holidays, christmas, new year and chinese new year. The results of the determination of the cost of travel of visitors then tested with the method of multiple linear regression using software Minitab 16. The research results showed that travel costs averaged visitors amounted to Rp. 109.176,26/people/visits for all zoning are examined. Calculation based on research data obtained economic values of tourism services BKR is Rp. 24.559.199,69/year. Characteristics that give visitors a real influence against the economic value of tourism services BKR i.e. time visiting when the Sunday school holiday, Chinese new year, christmas and new year, as well as the distance that has value P Value < 0.1. The influence of the dependent variables simultaneously (R-Sq) was 96,6% and R-Sq (adj) is 95,4%.Keywords: Demographic, economic value, tourism services, travel cost.

scholarly journals Analysis of Differences in the Choice of the Economic Value of Urban Trees in Madrid When Displayed in Situ and in Photographs

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 311
Author(s):  
Claudia García-Ventura ◽  
Alfonso Bermejo ◽  
Concepción González-García ◽  
M. Ángeles Grande-Ortíz ◽  
Esperanza Ayuga-Téllez ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Economic Value ◽  
Urban Trees ◽  
The Public ◽  
American Method ◽  
Ornamental Trees ◽  
The City ◽  
Larger Sample

The determination of an asset’s economic value has always been an important step in improving its management. The Madrid Region legislated the application of the first version of the Norma Granada as a method of appraising ornamental trees. However, the trees in the city of Madrid are only assessed in terms of ecosystem services (i-Tree Eco). A photograph of the asset to be appraised is often used in studies on the valuation of publicly-owned socio-environmental assets such as trees or landscapes. As a tree’s value is very closely linked to its size and to a number of features that can be seen through direct observation of the specimen, it is important to verify the validity of photographs as a method for obtaining the public’s opinion. This work presents a comparison between the valuations chosen by members of the public when observing the tree in situ and in a photograph. The aim is to verify the validity of photographs for their application to a larger sample and to understand qualitatively how citizens assess the trees in a city. The following appraisal methods were used: the American method, Council of Tree Landscape Appraisers (CTLA), Norma Granada and the Burnley method. The survey consisted of ten specimens from ten different species, and ten surveys were taken for each stem, making a total of 100 for each tree species and 1000 surveys in all. The surveys were done randomly and individually. Each interviewed chose one of the three values they were shown when observing the specimen in the photograph and in situ; 84% of the 1000 surveys gave as a result the same value choice when looking at the specimen on site and seeing it in a photograph.

scholarly journals Peningkatan Usaha Budidaya Cacing Tanah di Kecamatan Teras Kabupaten Boyolali

2021 ◽  
Vol 5 (2) ◽  
pp. 135
Author(s):  
Raden Rara Aulia Qonita ◽  
Erlyna Wida Riptanti
Keyword(s):  
Community Service ◽  
Organic Waste ◽  
Organic Fertilizer ◽  
Economic Value ◽  
Production Capacity ◽  
Management Training ◽  
Animal Protein ◽  
Protein Sources ◽  
Service Activity ◽  
Financial Income

<p><em><strong>Increasing of Earthworm Cultivation Business in Teras District Boyolali Regency.</strong> </em>Earthworms are soft-bodied, invertebrates, and have many functions as decomposer organisms, fertilizer producers from organic waste, and animal protein sources. Earthworms have high economic value. This community service aims to increase the capacity of earthworm cultivation through improved feed, use of vermicompost, and improvement of business bookkeeping on partner SMEs. The community service method is socialization, earthworm cultivation training, the introduction of media (feed), bookkeeping management training, and mentoring. Community service activities are earthworm cultivation training, introducing palm dregs and tofu dregs as media (feed), vermicompost as organic fertilizer, simple bookkeeping training, and mentoring. This community service activity can increase earthworms' production capacity by 50 - 70% per two months. SMEs have other alternative media (feed), namely palm dregs and tofu dregs, for worm cultivation. SMEs are already using vermicompost as organic fertilizer. SMEs have simple bookkeeping because they have recorded the financial income and expenditure of earthworm cultivation. Overall, this service activity has provided additional knowledge for SMEs to run a business so that the business is expected to progress and develop.</p>

Collaborative Study of the Kjeldahl Method for Determination of Protein Content of Milk

1969 ◽  
Vol 52 (1) ◽  
pp. 126-130
Author(s):  
D R Strang ◽  
J W Sherbon
Keyword(s):  
Statistical Analysis ◽  
Standard Deviation ◽  
Protein Content ◽  
Analysis Of Variance ◽  
Collaborative Study ◽  
Protein Analysis ◽  
Average Standard Deviation ◽  
Milk Samples ◽  
Kjeldahl Method

Abstract Nitrogen in 12 milk samples was measured in 19 laboratories by the Kjeldahl method. Three of the 19 laboratories were excluded from statistical analysis because the nitrogen values they reported differed markedly from those reported by the remaining 16 laboratories. The average standard deviation for the determinations was 0.012% nitrogen, which is equal to 0.077% protein. Analysis of variance indicated that the error due to the laboratories effect was significant when 16 laboratories were considered. When the laboratories were sorted according to various experience criteria, the variations due to laboratories were significant. When the laboratories were blocked according to catalyst used, the variation among laboratories was not significant.

scholarly journals Determination of essential and toxic metals in meats, meat products and eggs by spectrophotometric method

1970 ◽  
Vol 24 (2) ◽  
pp. 165-172 ◽  
Author(s):  
M Zahurul Alam Chowdhury ◽  
Zainul Abedin Siddique ◽  
SM Afzal Hossain ◽  
Azizul Islam Kazi ◽  
A Aminul Ahsan ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Meat Products ◽  
Chemical Society ◽  
Atomic Absorption Spectrophotometry ◽  
Arsenic Toxicity ◽  
Essential Metals ◽  
Tolerance Limits ◽  
The Public ◽  
Uv Visible

The concentration of essential metals such as Fe, Cu, Mg, Co and Zn and toxic metals such as Pb, Cd, Cr, As and Ni were determined in a number of animal meats, organ meats, meat products, and eggs by using UV-visible and atomic absorption spectrophotometry (AAS). The essential metal estimation in the investigated samples indicated the following range of concentration: Fe: 11 - 623 mg kg-1, Cu: 1 - 165 mg kg-1, Mg: 16 - 1372 mg kg-1, Co: 0.01 - 48 mg kg-1, Zn: 15 - 295 mg kg-1. These concentrations of essential metals are in the range of human necessities.  The concentrations of toxic metals in the same samples were: Pb: 0.03 - 43 mg kg-1, Cd: 0.01- 8 mg kg-1, Cr: 0.02 - 5 mg kg-1, As: 0.004 - 3 mg kg-1 and Ni: 0.03 - 41 mg kg-1. The concentration of arsenic in all samples was found negligible and this indicates that the investigated samples are safe from arsenic toxicity. The concentrations of other four toxic metals being very negligible in most of the samples indicate that these foodstuffs are reasonably safe from metal toxicity. However a few samples which exhibited higher concentrations of these metals above their tolerance limits are alarming for the public health and demand regular examination of these items before coming to the markets. The information obtained from the present investigation is expected to be useful to the general people of this region in selecting meats as their diets. Keywords: Meats; Organ meats; meat products; eggs; AAS; Heavy metals concentrations. DOI: http://dx.doi.org/10.3329/jbcs.v24i2.9705 Journal of Bangladesh Chemical Society, Vol. 24(2), 165-172, 2011

Determination of Optimal Public Transportation Routes Using Firefly and Tabu Search Algorithms

2020 ◽  
Vol 4 (5) ◽  
pp. 884-891
Author(s):  
Salwa Salsabila Mansur ◽  
Sri Widowati ◽  
Mahmud Imrona
Keyword(s):  
Tabu Search ◽  
Public Transportation ◽  
Traffic Congestion ◽  
Search Algorithm ◽  
Urban Transportation ◽  
The Public ◽  
Comparison Results ◽  
Congestion Problems ◽  
Transportation Routes

Traffic congestion problems generally caused by the increasing use of private vehicles and public transportations. In order to overcome the situation, the optimization of public transportation’s route is required particularly the urban transportation. In this research, the performance analysis of Firefly and Tabu Search algorithm is conducted to optimize eleven public transportation’s routes in Bandung. This optimization aims to increase the dispersion of public transportation’s route by expanding the scope of route that are crossed by public transportation so that it can reach the entire Bandung city and increase the driver’s income by providing the passengers easier access to public transportations in order to get to their destinations. The optimal route is represented by the route with most roads and highest number of incomes. In this research, the comparison results between the reference route and the public transportation’s optimized route increasing the dispersion of public transportation’s route to 60,58% and increasing the driver’s income to 20,03%.

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