Extension of Moringa oleifera seed aqueous extract shelf life using trona as a preservative

2013 ◽  
Vol 3 (2) ◽  
pp. 112-121
Author(s):  
S. B. Saulawa ◽  
C. A. Okuofu ◽  
A. Ismail ◽  
D. B. Adie ◽  
J. A. Otun ◽  
...  

The effects of Moringa oleifera seed extracts' deterioration and preservation on turbidity removal efficiency were studied. Trona was used as a preservative in the enhancement of the extract's shelf life. An average value of 92.30% was observed at the Moringa oleifera seed extracts' dosage of 800 mg/L as the highest average turbidity removal for all the extracts, while the least value 82.16% was observed at a dosage of 320 mg/L. The fresh preserved Moringa oleifera seed extract had a value of 95.18% as the highest average percentage turbidity removal against all the extracts for all dosages, while the plain extract had the lowest average percentage turbidity removal value of 74.93%. It was observed also that even though the preserved extract was the most consistent in turbidity removal (overall variance of 1.25), the fresh preserved extract had the overall highest performance. However, the difference in overall performance between the two was only marginal, while substantial difference was observed between the plain extract and the fresh plain extract.

2018 ◽  
Vol 2 (2) ◽  
pp. 178-182
Author(s):  
Sutijo Joko Sudiro ◽  
Muchammad Farid ◽  
Eko Swistoro

ABSTRACT [Relationship between Groundwater Surface Depth with Salinity at the Coast of New Kungkai Beach and its Implementation on Discovery Learning Model]. The aims of this study were 1) to describe the relationship between groundwater surface depth with salinity in the coastal areas of new kungkai beach of Seluma, and 2) to determine the improvement of learning outcomes (cognitive) of high ability students, moderate and low by using discovery learning model on the concept of static fluid in class X computer and network engineering at SMK Negeri 3 Seluma. This research was a quasi experimental research with one groups pretest-posttest design. The results showed: 1) The relationship between depth with salinity has a value of 0.6478 with a significance level of 0.001 (<0.05); 2) Learning with discovery learning model can improve student learning outcomes on cognitive aspects (knowledge). Increased cognitive results can be seen from the average value of the initial test, the final test and the average value of gain in the class x Tkj is high-ability groups are at high criteria with a value of 0.75 gain in the group is in the criteria medium with the value of gain 0,52 and in the low group were in moderate criteria with a gain value of 0.44. There is a difference in learning outcomes between the high, medium and low groups. The difference is shown by Fcount > Ftable (4.04 > 3.35) with a significance level of 5%. Keywords: Groundwater surface depth; salinity; discovery learning model; SMKN 3 Seluma.


1970 ◽  
Vol 4 (1) ◽  
Author(s):  
Suleyman A. Muyibi ◽  
Saad A. Abbas Megat Johari M. M. Noor Fakrul Razi Ahmadun

In this laboratory based study, varying quantities of oil, corresponding to 20 % w/w, 25 % w/w and 30 % w/w kernel weight extracted from Moringa oleifera seeds ( S1, S2, S3) respectively  were applied in the coagulation of model turbid water (kaolin suspension) and turbid river water samples from River Batang Kali and River Selangor in Malaysia to determine the percentage oil removed which gave the best coagulation efficiency. For model turbid water (kaolin suspension) coagulation of low turbidity of 35 NTU, medium turbidity of 100 NTU and high turbidity of 300 NTU, sample S2  gave the best turbidity removal corresponding to 91.7%, 95.5% and 99% respectively. Application of sample S2 to River Batang Kali with low initial turbidity of 32 NTU and high initial turbidity of 502 NTU gave a highest turbidity removal of 69% and 99% respectively. Application to River Selangor with medium initial turbidity- of 87 NTU and high initial turbidity of 466 NTU gave a highest residual turbidity' of 94% and 98.9%,  respectively.Key words: Moringa oleifera seed, selective oil extraction, coagulation, model turbid water (kaolin suspension), river water, turbidity removal.


2018 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Novia Daniati ◽  
Dezi Handayani ◽  
Relsas Yogica ◽  
Heffi Alberida

Curriculum of 2013 requires students to be able to think critically. This critical thinking ability can be trained by using questions that have indicators of critical thinking, besides those questions must also have cognitive levels C4 (analyze), C5 (evaluate), and C6 (synthesize). Padang Public Middle School 2 has implemented 2013 Curriculum in learning, but students' critical thinking skills are unknown. This research is a descriptive research. The method used in this research is descriptive method. The subject of the study consisted of 48 students of class VII of SMP Negeri 2 Padang. The data obtained in this study was obtained through test techniques. The test used is a description test. The test instruments used will be validated and analyzed first. Analysis of this instrument includes the level of difficulty, differentiation and reliability. Test instruments were tested before being used. This study produces data that the level of critical thinking skills of seventh grade students in Padang State Middle School is still in non-critical qualifications with a percentage average value of 48.53%. Indicators with the highest average percentage to the lowest, namely; the inference indicator obtained a score of 69.96% with quite critical qualifications; the indicator gives a basic statement obtained a value of 60.62% with less critical qualifications; the indicator estimates that a value of 53.12% is obtained with non-critical qualifications; the indicator gives an advanced statement obtained a value of 44.39% with non-critical qualifications, and; basic indicators of decision making obtained a value of 14.58% with non-critical qualifications. Keywords: Critical Thinking, Environmental Pollution, Descriptif


LWT ◽  
2018 ◽  
Vol 97 ◽  
pp. 39-44 ◽  
Author(s):  
Pedro H.F. Cardines ◽  
Aline T.A. Baptista ◽  
Raquel G. Gomes ◽  
Rosângela Bergamasco ◽  
Angélica M.S. Vieira

2021 ◽  
Vol 7 (1) ◽  
pp. 18-28
Author(s):  
Mar'atun Susanti

Abstract: This study aims to improve learning outcomes using QR Code-based poster media on the Excretion System in Humans. This type of research is classroom action research using the Hopkins model. Through 2 cycles starting from planning, action, observation, and reflection. The object of the research was 32 students in class 8E. Data collection tools used tests, questionnaires and observation sheets. The results showed that the cognitive value in the pre-cycle activities obtained an average percentage of 16% with the low category, in the first cycle it got an average percentage of 84.8%, and in the second cycle it got 85% in the very good category while the teacher activity in the first cycle obtained The average value is 79% in the good category, the second cycle gets a value of 96% in the very good category and the activities of the students in the first cycle get an average score of 69% in the good enough category, the second cycle gets a value of 94% in the very good category. The results of the questionnaire showed that 77% of students liked poster media with QR codes. Based on these results, it shows that the application of QR Code-based poster media can improve learning outcomes of 8E grade students of SMPN 1 Warungkiara. Keywords: Poster media, QR code, learning outcomes


2019 ◽  
Vol 7 (1) ◽  
pp. 60-67
Author(s):  
Sri Mulyati ◽  
Winancy Winancy

Breast cancer is a disease with characterized by uncontrolled development of cells and breast tissue. Women who has to use acceptors Hormonal contraception (Hormonal KB) has a risk of developing breast cancer. Self Breast Examination (BSE) or Periksa Payudara Sendiri (SADARI) is one of the easier and more efficient ways to be able to detect breast abnormalities by yourself. The purpose of the study was to determine the effect of health education by demonstration methods and leaflet media on breast self-examination of the knowledge and attitudes of WUS hormonal family planning acceptors about SADARI. This study was a quasi experiment: pretest-posttest design. The population was divided into 3 groups, namely groups given health education with leaflets, with demonstration methods, and a combination of leaflets + demonstrations. The results showed that the knowledge and attitudes of respondents before and after health education with leaflet media, demonstration methods, and leaflet + demonstration media combinations experienced a significant increase with a value of p <0.05 (p = 0,000). The increase score in the value of the average rating of knowledge was statistically significant in the demonstration group better than the leaflet group. The difference in the average value of the demonstration and demonstration group rankings + leaflets is not meaningful.  


Author(s):  
Yuliana Yuliana ◽  
Sulastri Sulastri ◽  
Nasaruddin Nasaruddin

This article discusses the level of resilience of post-earthquake disaster high school students in Pidie Jaya District. Resilience is the ability of a person to adjust and survive even if someone faces a difficult and pressing situation. This study uses descriptive method and sampling using cluster random sampling technique from 9 public high schools in Pidie Jaya Regency so that two schools were obtained as research sites, namely high school (SMA) 1 Tringgadeng and high school (SMA) 2 Meureudu with a sample of 310 students. The data collection method used was using the TIR-I questionnaire (Taufik and Ifdil Resilience Inventory). The data obtained were analyzed using descriptive statistical analysis and T-test to see differences in the level of resilience in terms of gender with the help of SPSS version 20.0. The results showed that the level of resilience of public high school students after the earthquake in Pidie Jaya District was in the moderate category with a percentage of 48.4% totaling 150 students with an average value of 134. Furthermore, this study also examined in detail 7 aspects of resilience which showed the results of aspects emotion regulation in the low category (38%), impulse control aspects (59%), optimism (65%), empathy (64%), 56% self-efficacy and reaching out (65%) in the moderate category and causal analysis (69 %) in the high category. While the difference in the level of resilience in terms of sex for SMAN 1 Tringgadeng there are differences in the level of resilience where men are higher, with a value of 148, 75 and lower women with a value of 123,74. While for SMAN 2 Meureudu there is a no different level of resilience between men and women.


2011 ◽  
Vol 128 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Tasuma SUZUKI ◽  
Masakazu NIINAE ◽  
Yasuaki SANADA ◽  
Atsushi NAKAMURA ◽  
Yukio KOUCHI

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