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PRODUCTION OF BIOETHANOL FROM CITRUS FRUIT (CITRUS SP) WASTE BY ACID HYDROLYSIS AND FERMENTATION USING SACCHAROMYCES CEREVISIAE Andini, Citra; Mahajoeno, Edwi; Setyaningsih, Ratna
Prosiding Seminar Biologi Vol 10, No 2 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Prodi Pendidikan Biologi FKIP UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.587 KB)

Abstract

One of the promising biofuel is bioethanol which can be produced from agricultural waste cellulosic biomass such as citrus fruit waste. Bioethanol can be derived from citrus fruit waste that is rarely used. Cellulosecontained in citrus fruit  waste can be converted into ethanol through a process of chemical and biological. Sulfuric acid ( H2SO4) can be used in hydrolysis of cellulose material in citrus fruit waste to producesugars and batch fermentation by Saccharomyces cereviseae can be used to convert sugars into bioethanol.The purpose of this research were to determine the highest reducing sugar from acid hydrolisis with different acid concentration levels of 0, 3, 7, and 10% and to know the highest levels of bioethanol and optimum incubation time. Extracts made from citrus fruit waste without peel. Citrus fruits were hydrolyse using a variation of 1 M H2SO4 acid concentration of 0, 3, 7, and 10 % to produce reducing sugars. Reducing sugars were analyzed using the Nelson Somogyi method.The optimum reducing sugar is used for fermentation by yeast Saccharomyces cerevisiae using a variation of the long incubation days 0, 2, 4, 6, 8 and bioethanol purified by distillation method. Acid hydrolysis resulted reduction sugar 3,5%, at an optimum concentration of 3% is used for fermentation by yeast S. cerevisiae. The highest level of fermentation time of 6 days produced bioethanol having the content 9,75% .  Kata Kunci : Bioethanol, Citrus Acid Waste, Saccharomyces Cerevisiae, Fermentation .
PRODUCTION OF BIOETHANOL FROM CITRUS FRUIT (Citrus sp) WASTE BY ACID HYDROLYSIS AND FERMENTATION USING Saccharomyces cerevisiae Andini, Citra; Mahajoeno, Edwi; Setyaningsih, Ratna
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 10, No 2 (2013): Seminar Nasional X Pendidikan Biologi
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the promising biofuel is bioethanol which can be produced from agricultural waste cellulosic biomass such as citrus fruit waste. Bioethanol can be derived from citrus fruit waste that is rarely used. Cellulosecontained in citrus fruit  waste can be converted into ethanol through a process of chemical and biological. Sulfuric acid ( H2SO4) can be used in hydrolysis of cellulose material in citrus fruit waste to producesugars and batch fermentation by Saccharomyces cereviseae can be used to convert sugars into bioethanol.The purpose of this research were to determine the highest reducing sugar from acid hydrolisis with different acid concentration levels of 0, 3, 7, and 10% and to know the highest levels of bioethanol and optimum incubation time. Extracts made from citrus fruit waste without peel. Citrus fruits were hydrolyse using a variation of 1 M H2SO4 acid concentration of 0, 3, 7, and 10 % to produce reducing sugars. Reducing sugars were analyzed using the Nelson Somogyi method.The optimum reducing sugar is used for fermentation by yeast Saccharomyces cerevisiae using a variation of the long incubation days 0, 2, 4, 6, 8 and bioethanol purified by distillation method. Acid hydrolysis resulted reduction sugar 3,5%, at an optimum concentration of 3% is used for fermentation by yeast S. cerevisiae. The highest level of fermentation time of 6 days produced bioethanol having the content 9,75% .  Kata Kunci : Bioethanol, Citrus Acid Waste, Saccharomyces Cerevisiae, Fermentation .
The Shift of Honorifics due to The Promotion As A Government Official: Comparative Study Sukmawaty, Sukmawaty; Andini, Citra; Fathu Rahman, Fakhriawan
ELS Journal on Interdisciplinary Studies in Humanities Vol. 5 No. 1 (2022): March
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.269 KB) | DOI: 10.34050/elsjish.v5i1.20817

Abstract

The general public claims that there are socially agreed rules of honor and that the use of honorary titles is a matter of complying with those rules, and researchers often claim this too. This research aims to identify the kinds of the honorifics used by English and Buginese Bone language, and to analyze the use of the honorific in used English and Buginese Bone focused on the shift of honorifics due to the promotion as a government officer. This was comparative study between English and Buginese language in respect someone in order to highlight the social status and rank of job and to show respect and to dignify social status. This research used the descriptive qualitative method while the English data were obtained through the English movies that are Black Widow, and The Intern, as well as the news posted at BBC news.com about people who receive awards in the form of titles while Buginese data were obtained through the participants recording and note-taking. The research result show that in English almost every year the country's leaders give royal titles to people who excel in their respective careers, and the title is recognized by the state, the title "sir" for men while "dame" if she is a woman and it put in front of their names, while Buginese Bone has hierarchical system was mention that different rank of job make different honorific and it used to respect and dignify someone’s status, this form used honorific lexemes such as tabe’, ndi’, iye’, puang, and petta cama’, beside in order to show respect in English utterances by immediately greeted by name, such as Paul, George, Clara and Jane because in English the name is more important than the title.
The Study of Japanese Women in the Facial Treatment Advertisement: A Semiotics Perspective of Pierce’s Theory Andini, Citra; Sosrohadi, Somadi; Fairuz, Fairuz; Dalyan, M.; Fathu Rahman, Fakhriawan; Hasnia, Hasnia
ELS Journal on Interdisciplinary Studies in Humanities Vol. 5 No. 2 (2022): June
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.101 KB) | DOI: 10.34050/elsjish.v5i2.21592

Abstract

This study aims to reveal the beauty standards of Japanese women in the Facial Treatment Essence SK II advertisement and to describe the slogan “Rasakan kekuatan PITERA untuk kulit tampak sebening kristal” in the Facial Treatment Essence SK II advertisement so that it can influence consumers. Meanwhile, the beauty of cosmetic users is always physically visible, even the model to introduce this product is Imma, a virtual model girl created by CGI (Computer-generated Imagery). Some of the advantages in this product are visualized by Imma, namely bright and glowing white skin. Imma has become an icon for this product because the advantages that it offers are all seen in Imma, and the standard of beauty described by Japan and the way to be beautiful like this virtual model girl is to apply the Facial Treatment Essence SK II product. This research uses a qualitative descriptive method to analyze data which maps which include icons, indexes and symbols. The result of this research indicates that the Japanese beauty standards shown by this ad are like Imma and to have skin like her, the right skincare is Facial Treatment Essence SK II and according to its slogan, "Feel the power of PITERA for crystal clear skin".
The Ability of 1st Class Students of SMAN 11 Enrekang to Arrange Verbal and Nominal Sentences Hasnia, Hasnia; Andini, Citra; Tahir, M Dalyan; Hunaeni, Hunaeni; Zulfikariandi, Zulfikariandi; MT, Muslimin
ELS Journal on Interdisciplinary Studies in Humanities Vol. 5 No. 3 (2022): September
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (319.964 KB) | DOI: 10.34050/elsjish.v5i3.23171

Abstract

This research aims to reveal the ability of 1st graders of SMAN 11 Enrekang in compiling verbal and nominal sentences using the simple present tense and the difficulties that occur when compiling verbal and nominal sentences using the simple present tense. The researcher used quantitative method by applying the Surface Strategy Taxonomy in analyzing the data. The results of this research indicating that there are four types of errors. The frequency and percentage based on the surface strategy taxonomy are 63.59% misformation, then 16.18% addition, 13.88% omission, and 6.35% misordering. Furthermore, there are three difficulties experienced by students in compiling verbal and nominal sentences using the simple present tense, 1) Students do not understand the grammatical system; 2) students just write down what comes to mind without following the grammar; and 3) students do not understand vocabulary. The teachers recommend practicing grammar rules, in the simple present tense for mistakes. In addition, other researchers can provide techniques to improve students' mastery of the simple present tense