scholarly journals Gender Differences of B Cell Signature in Healthy Subjects Underlie Disparities in Incidence and Course of SLE Related to Estrogen

2014 ◽  
Vol 2014 ◽  
pp. 1-17 ◽  
Author(s):  
Hongye Fan ◽  
Guanjun Dong ◽  
Guangfeng Zhao ◽  
Fei Liu ◽  
Genghong Yao ◽  
...  
Keyword(s):  
Gender Differences ◽  
B Cells ◽  
Global Gene Expression ◽  
Gene Expressions ◽  
Significant Difference ◽  
Healthy Female ◽  
Nonsignificant Difference ◽  
Differential Gene ◽  
The Difference ◽  
Healthy Females

The aim of the present study was to investigate mechanism of the gender differences of B cells. The results showed that 358 differential gene expressions (DEGs) were displayed between healthy females and males. Compared with male, 226 and 132 genes were found to be up- and downregulated in the female. 116 genes displayed possible correlation with estrogen. Moreover, the upregulated DEGs (Cav1, CD200R1, TNFRSF17, and CXCR3) and downregulated DEGs (EIF1AY and DDX3Y) in healthy female may be involved in gender predominance of some immune diseases. Furthermore, signaling pathway analysis for estrogen-relevant DEGs showed that only 26 genes were downregulated in SLE female versus SLE male, of which expressions of 8 genes had significant difference between SLE females and SLE males but are having nonsignificant difference between healthy females and healthy males. Except for the 5 Y-chromosome-related genes or varients, only 3 DEGs (LTF, CAMP, and DEFA4) were selected and qRT-PCR confirmed that the expressions of LTF and CAMP decreased significantly in B cells from female SLE patients. These data indicated that the gender differences were existent in global gene expression of B cells and the difference may be related to estrogen.

scholarly journals POS0208 GENDER DIFFERENCES IN RESPONSE TO BIOLOGICALS. WOMEN FARE WORSE ACROSS INFLAMMATORY ARTHRITIS DISEASES - DATA FROM THE BIOREG

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 320.1-321
Author(s):  
E. Loibner ◽  
V. Ritschl ◽  
B. Leeb ◽  
P. Spellitz ◽  
G. Eichbauer-Sturm ◽  
...  
Keyword(s):  
Gender Differences ◽  
Psoriatic Arthritis ◽  
Gender Difference ◽  
Disease Activity ◽  
Inflammatory Arthritis ◽  
Tnf Inhibitors ◽  
Significant Difference ◽  
The Difference ◽  
All Diseases

Background:Gender differences in prevalence and disease course are known in various rheumatic diseases; however, investigations of gender difference concerning therapeutical response have yielded variable results.Objectives:The aim of this retrospective study was to investigate, whether a gender difference in response rate to biological disease-modifying antirheumatic drugs (bDMARDs) and apremilast in bDMARD-naïve patients could be observed across the three most prevalent inflammatory arthritis diseases: rheumatoid arthritis (RA), spondylarthritis (SpA) and psoriatic arthritis (PsA). Additionally, a response to individual TNF blockers was investigated in this respect.Methods:Data from bDMARD-naïve RA-, SpA- and PsA-patients from Bioreg, the Austrian registry for biological DMARDs in rheumatic diseases, were used. Patients with a baseline (Visit 1=V1) and follow-up visits at 6 months (Visit 2=V2) and 12 months (Visit 3=V3) were included and response to therapy with TNF-inhibitors (TNFi), furthermore to therapy with rituximab, tocilizumab and apremilast was analyzed according to gender. The remaining bDMARDs were not analyzed due to small numbers. Key response-parameter for RA was disease activity score (DAS28), whereas for PsoA the Stockerau Activity Score for Psoriatic Arthritis (SASPA) and for SpA the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) were employed; in addition, the Health assessment Questionnaire (HAQ) was used. Data were analyzed in R Statistic stratified by gender using Kruskal-Wallis and Wilcoxon tests.Results:354 women and 123 men with RA (n=477), 81 women and 69 men with PsA (n=150), 121 women and 191 men with SpA (n=312) were included. No significant differences in biometrics was seen between female and male patients at baseline in all diseases.In RA patients overall DAS28 decreased from baseline (V1) to V2 and V3 (DAS28: V1: male: 4.38 [3.66, 5.11], female: 4.30 [3.68, 5.03], p(m/f) = 0.905; V2: male: 2.66 [1.73, 3.63], female: 3.10 [2.17, 3.98], p(m/f) = 0.015; V3: male: 2.25 [1.39, 3.36], female: 3.01 [1.87, 3.87], p(m/f) = 0.002). For TNF inhibitors (n=311), there was a significant difference between genders at V2 (Fig.1a). Patients receiving Rituximab (n=41) displayed a significantly higher DAS28 at baseline in females, which diminished in the follow up: V1: (p(m/f) p=0.002; V2: p=0.019; V3: p=0.13); response to tocilizumab (n=63) did not show any gender differences.In PsA patients overall SASPA decreased from baseline (V1) to V2 and V3 (SASPA: V1: male: 4.00 [2.80, 5.20], female: 4.40 [2.80, 5.80], p(m/f) = 0.399; V2: male: 2.20 [1.20, 3.50], female: 3.40 [2.00, 5.00], p(m/f) = 0.071; V3: male: 1.80 [0.80, 2.70], female: 3.01 [2.35, 4.80], p(m/f) = 0.001). For TNF inhibitors (n=79), there was a significant difference between genders at V3 (Fig 1a). For Apremilast (n=39), there was a significant difference between genders at V2 (Fig.1c).In SpA patients overall BASDAI decreased from baseline (V1) to V2 and V3 (BASDAI: V1: male: 4.70 [2.88, 6.18], female: 4.80 [3.30, 6.20], p(m/f) = 0.463; V2: male: 3.05 [2.00, 4.60], female: 3.64 [2.62, 5.41], p(m/f) = 0.039; V3: male: 3.02 [1.67, 4.20], female: 3.65 [2.18, 5.47], p(m/f) = 0.016). In V3 a differential BASDAI in response to TNFi (n=299) was observed (Fig.1a).Possible differences of response to individual TNFi (etanercept, infliximab, other TNFi) measured by HAQ were investigated in all diseases together. The difference between male and females was significant at baseline for all 3 TNFi; whereas with the use of ETA the significant difference was carried through to V2 and V3, it was lost with the use of IFX and was variable with the other TNFi (Fig.1b)Figure 1.Conclusion:Female patients showed a statistically lower response to TNFi in all three disease entities (RA, SpA and PsoA) to a variable degree in our homogenous central european population. Interestingly, the difference was not uniform across individual TNFi when measured by HAQ. Gender differences were also seen in response to Apremilast.Disclosure of Interests:Elisabeth Loibner: None declared, Valentin Ritschl: None declared, Burkhard Leeb Speakers bureau: AbbVie, Roche, MSD, Pfizer, Actiopharm, Boehringer-Ingelheim, Kwizda, Celgene, Sandoz, Grünenthal, Eli-Lilly, Grant/research support from: TRB, Roche, Consultancies: AbbVie, Amgen, Roche, MSD, Pfizer, Celgene, Grünenthal, Kwizda, Eli-Lilly, Novartis, Sandoz;, Peter Spellitz: None declared, Gabriela Eichbauer-Sturm: None declared, Jochen Zwerina: None declared, Manfred Herold: None declared, Miriam Stetter: None declared, Rudolf Puchner Speakers bureau: AbbVie, BMS, Janssen, Kwizda, MSD, Pfizer, Celgene, Grünenthal, Eli-Lilly, Consultant of: AbbVie, Amgen, Pfizer, Celgene, Grünenthal, Eli-Lilly, Franz Singer: None declared, Ruth Fritsch-Stork: None declared

Lack of gender differences in familial schizophrenia

1997 ◽  
Vol 14 (4) ◽  
pp. 128-131
Author(s):  
Bernadette M Murphy ◽  
John G Burke ◽  
Joseph C Bray ◽  
Dermot Walsh ◽  
Kenneth S Kendler
Keyword(s):  
Gender Differences ◽  
Clinical Features ◽  
Negative Symptoms ◽  
Age At Onset ◽  
Gender Effects ◽  
Final Sample ◽  
Significant Difference ◽  
Schizophrenic Patients ◽  
Males And Females ◽  
The Difference

AbstractObjective: Gender appears to have a significant impact on the prevalence, age at onset, symptoms and outcome of schizophrenia. This study examines gender effects in a population of familial schizophrenic patients in Ireland.Method: Families with two or more siblings suffering from schizophrenia, as defined by DSM-III-R were ascertained in Ireland. The final sample comprised 169 siblings from 80 families. Siblings were interviewed using the Structured Clinical Interview for DSM-III-R (SCID), the Scale for the Assessment of Negative Symptoms (SANS) and the Strauss-Carpenter Levels of Functioning Scale. The difference between males and females for various clinical features were calculated.Result: There was a marked excess of affected males (65% male and 35% female). When the excess of male subjects was taken into account there was no significant excess of same-sex as compared to opposite-sex pairs. There were no significant difference between males and females for age at onset, age at first admission, symptoms or level of outcome.Conclusion: The excess of males and the lack of gender differences for clinical features found in this study may, in part, be due to the narrow diagnostic criteria used. Alternatively, at least some of these findings may be specific to this Irish sample. Further research is a need to see if these findings can be replicated in other countries.

scholarly journals Transformational Leadership In Hierarchical Context: A Study Of Gender Differences In The Mobile Communication Sector In Egypt

2015 ◽  
Vol 32 (1) ◽  
pp. 355
Author(s):  
Abdel Moneim Elsaid ◽  
Basant N.S. Mostafa
Keyword(s):  
Gender Differences ◽  
Transformational Leadership ◽  
Service Providers ◽  
Leadership Behaviors ◽  
Middle Level ◽  
Mobile Service ◽  
Significant Difference ◽  
Multifactor Leadership ◽  
The Difference ◽  
Middle Managerial

<p>This paper empirically studies leaders’ gender differences in transformational leadership among both lower and middle level managers while examining the difference between lower and middle level mangers regarding transformational leadership behaviors. A sample of 122 managers from all three Mobile service providers (Mobinil, Vodafone, and Etisalat) currently operating in Egypt are studied. Transformational leadership was measured through five behaviors using the Bass and Avolio (1997) Multifactor Leadership Questionnaire. Leaders self-rated their transformational leadership behaviors. Results showed that there is no significant difference between lower and middle managerial levels in all transformational leadership behaviors. Female lower level managers did not excel significantly in all transformational leadership behaviors. However they exceled only in the idealized attribute dimension while no significant difference between male and female middle level managers was found.</p>

scholarly journals Academic procrastination among University students – A gender based study

2020 ◽  
Vol 15 (2) ◽  
pp. 399-403
Author(s):  
Rashmi Rekha Gohain ◽  
Sampreety Gogoi
Keyword(s):  
Gender Differences ◽  
University Students ◽  
Assessment Scale ◽  
Academic Procrastination ◽  
Academic Goals ◽  
Male And Female ◽  
Significant Difference ◽  
The Difference ◽  
Gender Based

Academic procrastination is a tendency of delaying academic-related tasks due to one or other reasons until the last minute of experiencing anxiety and stress associated with it. The present study aims to investigate gender differences in the reasons for academic procrastination among University Students. The sample consists of 199 undergraduate’s students who were selected from Assam Agricultural University (AAU) using Solvin’s formula and proportionate allocation. The procrastination Assessment Scale for Students (PASS) (Solomon and Rothblum, 1984) was administrated to collect the data. The difference between male and female in reasons was checked by using Z test and the results revealed that there is no significant difference in reasons of academic procrastination in relation to gender. Procrastination leads to failure of meeting individual’s academic goals so proper recognition to delaying behaviour is very much important in today’s time for a successful and accomplished life.

scholarly journals Gender Differences in Clinical and Epidemiological Profile of Adult Patients with Vitiligo

2021 ◽  
Vol 9 (01) ◽  
pp. 24-27
Author(s):  
Yogesh Poudyal ◽  
Chandra Bhal Jha ◽  
Niraj Parajuli
Keyword(s):  
Gender Differences ◽  
Age Groups ◽  
Sampling Technique ◽  
Cross Sectional Study ◽  
Chi Square ◽  
Cross Sectional ◽  
Epidemiological Aspect ◽  
Epidemiological Features ◽  
Significant Difference ◽  
The Difference

INTRODUCTION Vitiligo is an acquired disorder of skin characterized by white macules. Though there are many studies describing clinical and epidemiological features of vitiligo; there are few studies which have attempted to see the differences between male and female. Understanding the gender differences in clinico-epidemiological features will help to find the direction for further research in understanding pathogenesis. The objective was to find the gender wise differences in clinico-epidemiological pattern of vitiligo.   MATERIAL AND METHODS This was cross sectional study done at Dermatology and Venereology out-patient clinic of Universal College of Medical Sciences Teaching hospital, Bhairhawa, Nepal from January 1, 2015 to December 31, 2016. Consecutive sampling technique was used and the cases of 18 years and above were taken. Chi-square test, multi-variate logistic regression, two sample t-tests were used to analyze the data.   RESULTS The total number of case was 190. Female to male ratio was 1.38:1. Vitiligo vulgaris was seen more in female and mucosal vitiligo more in male and the difference was statistically significant.   However, there was no statistically significant difference among gender in family history, duration of disease, mucosal and hair involvement, history of recurrence and various age groups.   CONCLUSION Vitiligo vulgaris is seen more in female and mucosal vitiligo is seen more in male. This study has strengthened the evidence regarding the difference noted in clinic-epidemiological aspect of vitiligo. There should be more studies, so that more patterns in gender differences could be understood, and this will help in understanding the pathogenesis of vitiligo.  

Anthropometric and Anthroposcopic Analysis of Periorbital Features in Malaysian Population: An Inter-racial Study

2018 ◽  
Vol 34 (04) ◽  
pp. 400-406 ◽  
Author(s):  
Pramod Kumar ◽  
Mounir Bashour ◽  
Vasanthakumar Packiriswamy
Keyword(s):  
Gender Differences ◽  
Apex Angle ◽  
Palpebral Fissure ◽  
Female Group ◽  
Racial Groups ◽  
Aesthetic Result ◽  
Lateral Canthus ◽  
Significant Difference ◽  
The Difference ◽  
And Gender

AbstractIn oculoplastic operations, knowledge of the dimensions of periorbital features based on age, gender, and race is essential for achieving better aesthetic result. This article seeks to determine the racial and gender differences of periorbital features among Malaysian Malay (MM), Malaysian Indian (MI), and Malaysian Chinese (MI) subjects. Evaluation of periorbital features was done on photographs of 200 MM, 200 MI, and 200 MC subjects, aged 18 to 26 years. The measured values were evaluated by an independent t-test. A significant difference was found between MM and MI in all measurements except interbrow distance in males, eyebrow thickness in females, and apex to lateral limbus distance in both sexes. Between MI and MC the difference was insignificant for interbrow distance in male groups, apex to lateral limbus distance in females, and palpebral fissure inclination and eyebrow apex angle in both sexes. Between MM and MC, significant differences were found for eyebrow thickness and medial canthus tilt in female group. Male groups showed significant difference for apex to lateral limbus and lateral canthus distance and eyebrow apex angle. Eyebrow height, palpebral fissure width, and intercanthal distance were significantly different in both sexes. Sexual dimorphism was found for all measurements in MI, but MM and MC showed insignificant difference for eyebrow apex angle. Four types of epicanthus were observed in MM and MC and three types in MI. Eyebrow apex between lateral limbus and lateral canthus was the most common position in all racial groups. Significant racial and gender differences exist for certain periorbital measurements. The knowledge of these differences is expected to influence the surgical outcome.

scholarly journals Determination of PFOR gene expression in strains of G. intestinalis with different inhibitory concentrations of metronidazole

2015 ◽  
Vol 9 (05) ◽  
pp. 519-523 ◽  
Author(s):  
Rozalia Begaydarova ◽  
Yekaterina Yukhnevich ◽  
Dmitry Babenko ◽  
Sholpan Kaliyeva ◽  
Iliya Azizov ◽  
...  
Keyword(s):  
Gene Expression ◽  
Software Tool ◽  
Giardia Intestinalis ◽  
Gene Expressions ◽  
Development Of Resistance ◽  
Metronidazole Resistance ◽  
Significant Difference ◽  
The Difference ◽  
Specific Pair

Introduction: Giardia intestinalis is the most important and common diarrhea-causing parasitic protozoa worldwide with growing clinical relevance in public health. There are many documented cases of G. intestinalis resistance to metronidazole (MZ). Pyruvate: ferredoxin oxidoreductase (PFOR), the membrane-localized enzyme, plays a key role in the development of resistance to drugs. The aim of the present study was to evaluate the difference in the levels of PFOR gene expression between MZ-resistant and MZ-susceptible strains of G. intestinatlis. Methodology: From 159 samples with G. intestinalis cysts, 48 strains were successfully cultivated. Using specific pair primers, PFOR gene expressions were estimated in different groups of Giardia. The polymerase chain reaction (PCR) data were analyzed with Bayesian analysis of qRT-PCR data using MCMC.qpcr package, with relative expression software tool (REST) and quantitative PCR CopyCount web source. Results: In the group of Giardia with minimum inhibitory concentration (MIC) of 6.3 µM, the level of PFOR gene expression was downregulated and compared with controls, differed by 1.5 to 2.8 times. At the same time, there was no significant difference in PFOR gene expression between the control (susceptible) group and the group with MIC of 3.2 µM. Conclusions: Though there is association between PFOR gene expression and metronidazole resistance of Giardia intestinalis, the level of PFOR gene expression cannot be a strong genetic marker to predict level of resistance to metronidazole based on MICs.

Cranial crassicaudiasis in two coastal dolphin species from South Africa is predominantly a disease of immature individuals

2020 ◽  
Vol 139 ◽  
pp. 93-102 ◽  
Author(s):  
MF Van Bressem ◽  
P Duignan ◽  
JA Raga ◽  
K Van Waerebeek ◽  
N Fraijia-Fernández ◽  
...  
Keyword(s):  
South Africa ◽  
Bone Development ◽  
Bottlenose Dolphins ◽  
Fatal Outcome ◽  
Population Level ◽  
Cape Coast ◽  
Osteolytic Lesions ◽  
Immune Mediated ◽  
Significant Difference ◽  
The Difference

Crassicauda spp. (Nematoda) infest the cranial sinuses of several odontocetes, causing diagnostic trabecular osteolytic lesions. We examined skulls of 77 Indian Ocean humpback dolphins Sousa plumbea and 69 Indo-Pacific bottlenose dolphins Tursiops aduncus, caught in bather-protecting nets off KwaZulu-Natal (KZN) from 1970-2017, and skulls of 6 S. plumbea stranded along the southern Cape coast in South Africa from 1963-2002. Prevalence of cranial crassicaudiasis was evaluated according to sex and cranial maturity. Overall, prevalence in S. plumbea and T. aduncus taken off KZN was 13 and 31.9%, respectively. Parasitosis variably affected 1 or more cranial bones (frontal, pterygoid, maxillary and sphenoid). No significant difference was found by gender for either species, allowing sexes to be pooled. However, there was a significant difference in lesion prevalence by age, with immature T. aduncus 4.6 times more likely affected than adults, while for S. plumbea, the difference was 6.5-fold. As severe osteolytic lesions are unlikely to heal without trace, we propose that infection is more likely to have a fatal outcome for immature dolphins, possibly because of incomplete bone development, lower immune competence in clearing parasites or an over-exuberant inflammatory response in concert with parasitic enzymatic erosion. Cranial osteolysis was not observed in mature males (18 S. plumbea, 21 T. aduncus), suggesting potential cohort-linked immune-mediated resistance to infestation. Crassicauda spp. may play a role in the natural mortality of S. plumbea and T. aduncus, but the pathogenesis and population level impact remain unknown.

Perbedaan Penggunaan Antikoagulan K2EDTA DAN K3EDTA Terhadap Hasil Pemeriksaan Indeks Eritrosit

2018 ◽  
Vol 1 (2) ◽  
pp. 114
Author(s):  
Wahdaniah Wahdaniah ◽  
Sri Tumpuk
Keyword(s):  
Screening Test ◽  
Venous Blood ◽  
The Body ◽  
Ethylene Diamine ◽  
P Value ◽  
Cross Sectional ◽  
Significant Difference ◽  
Ethylene Diamine Tetra Acetate ◽  
The Difference ◽  
Index Value

Abstract: Routine blood examination is the earliest blood test or screening test to determine the diagnosis of an abnormality. Blood easily froze if it is outside the body and can be prevented by the addition of anticoagulants, one of which Ethylene Diamine Tetra Acetate (EDTA). Currently available vacuum tubes containing EDTA anticoagulants in the form of K2EDTA and K3EDTA. K3EDTA is usually a salt that has better stability than other EDTA salts because it shows a pH approaching a blood pH of about 6.4. The purpose of this research is to know the difference of erythrocyte index results include MCH, MCV and MCHC using K3EDTA anticoagulant with K2EDTA. This research is a cross sectional design. This study used venous blood samples mixed with K2EDTA anticoagulant and venous blood mixed with K3EDTA anticoagulants, each of 30 samples. Data were collected and analyzed using paired different test. Based on data analysis that has been done on MCH examination, p value <0,05 then there is a significant difference between samples with K3EDTA anticoagulant with K2EDTA to erythrocyte index value. Then on the examination of MCV and MCHC obtained p value <0.05 then there is no significant difference between samples with K3EDTA anticoagulant with K2EDTA to erythrocyte index value.Abstrak: Pemeriksaan darah rutin merupakan pemeriksaan darah yang paling awal atau screening test untuk mengetahui diagnosis suatu kelainan. Darah mudah membeku jika berada diluar tubuh dan bisa dicegah dengan penambahan antikoagulan, salah satunya Ethylene Diamine Tetra Acetate (EDTA). Dewasa ini telah tersedia tabung vakum yang sudah berisi antikoagulan EDTA dalam bentuk  K2EDTA dan  K3EDTA. K3EDTA  biasanya berupa garam yang mempunyai stabilitas yang lebih baik dari garam EDTA yang lain karena menunjukkan pH yang mendekati pH darah yaitu sekitar 6,4. Tujuan dari penelitian ini adalah untuk mengetahui perbedaan hasil indeks eritrosit meliputi MCH, MCV dan MCHC menggunakan antikoagulan K3EDTA dengan K2EDTA. Penelitian ini merupakan penelitian dengan desain cross sectional. Penelitian ini menggunakan sampel darah vena yang dicampur dengan antikoagulan K2EDTA dan darah vena yang dicampur dengan antikoagulan K3EDTA, masing-masing sebanyak 30 sampel. Data dikumpulkan dan dianalisis menggunakan uji beda berpasangan. Berdasarkan analisis data yang telah dilakukan pada pemeriksaan MCH didapatkan nilai p < 0,05 maka ada perbedaan yang signifikan antara sampel dengan antikoagulan K3EDTA dengan K2EDTA terhadap nilai indeks eritrosit. Kemudian pada pemeriksaan MCV dan MCHC didapatkan nilai p < 0,05 maka tidak ada perbedaan yang signifikan antara sampel dengan antikoagulan K3EDTA dengan K2EDTA terhadap nilai indeks eritrosit.

Pengaruh Jumlah Pencucian Beras dengan Kadar Klorin

2017 ◽  
Vol 1 (1) ◽  
pp. 89
Author(s):  
Indah Purwaningsih ◽  
Supriyanto Supriyanto
Keyword(s):  
Mucous Membrane ◽  
Confidence Level ◽  
Iodometric Titration ◽  
Titration Method ◽  
Anova Test ◽  
Average Value ◽  
Significant Difference ◽  
The Difference

Abstract: Chlorine is a green halogen-shaped halogen gas at normal temperature and serves as bleach, stain remover and disinfectant. Chlorine is now widely used for bleaching rice so that less quality rice looks like quality rice. Chlorine is very toxic and causes mucous membrane irritation, highly reactive and very powerful oxidizer. The purpose of this research was to determine the difference of chlorine level in chlorinated rice washed once, twice and 3 times. The sample in this study amounted to 11 samples calculated by replication formula. Each sample was treated 3 times, ie 1 washed once, 2 washed twice and washed 3 times. The samples then examined by iodometric titration method. Based on the results of the study using ANOVA test, 11 samples obtained the average value of chlorine after washed once amount of 0.0176%, after washed twice amount of 0.0111%, and after washed 3 times amount of 0.0052% with the value significance p = 0.03 (p <0.05) at 95% confidence level which means there was a significant difference between chlorine levels in chlorinated rice washed once, twice and 3 times.Abstrak: Klorin merupakan unsur halogen berbentuk gas berwarna kuning kehijauan pada suhu normal danberfungsi sebagai pemutih, penghilang noda maupun desinfektan. Klorin sekarang banyak digunakan untuk bahan pemutih beras agar beras yang kurang berkualitas tampak seperti beras berkualitas. Klorin sangat toksik dan menyebabkan iritasi membran mukosa, sangat reaktif dan merupakan oksidator yang sangat kuat. Tujuan dari penelitian ini ialah untuk mengetahui perbedaan kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali. Sampel dalam penelitian ini berjumlah 11 sampel yang dihitung dengan rumus replikasi. Setiap sampel diberi perlakuan sebanyak 3 kali, yaitu 1 kali pencucian, 2 kali pencucian dan 3 kali pencucian. Sampel penelitian kemudian diperiksa dengan metode titrasi iodometri. Berdasarkan hasil penelitian menggunakan uji Anova secara komputerisasi terhadap 11 sampel diperoleh nilai rata-rata kadar klorin setelah 1 kali pencucian sebesar 0,0176 %, setelah 2 kali pencucian sebesar 0,0111 %, dan setelah 3 kali pencucian sebesar 0,0052 % dengan nilai signifkansi p = 0,03 (p<0,05) pada tingkat kepercayaan 95% yang artinya ada perbedaan yang bermakna antara kadar klorin pada beras berklorin yang dicuci sebanyak 1 kali, 2 kali dan 3 kali.

Sign in / Sign up

Export Citation Format

Share Document