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primary topic: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA

ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA
type: Thesis
type: Article
abstract: The analysis of adulterated Luwak coffee presents an analytical challenge due to the complexity and spectral similarity with adulterant materials such as Robusta coffee and cocoa powder, which cause overlapping infrared spectra and hinder accurate component identification. This study aims to perform spectral characterization, adulterant identification, and method validation based on FTIR spectroscopy combined with the Multivariate Curve Resolution (MCR) approach. Spectral characterization was carried out by comparing pure and mixed spectra to observe infrared absorption patterns. Adulterant identification was conducted using MCR, while method validation was performed through two parameters, namely linearity and accuracy tests. Based on the FTIR spectral measurements, Luwak coffee showed major absorption peaks at wavenumbers 3500–3300 cm⁻¹ (O–H), 2920–2850 cm⁻¹ (aliphatic C–H), and 1745 cm⁻¹ (C=O ester), while Robusta coffee and cocoa powder exhibited differences in intensity and peak positions, particularly in the regions 1655–1545 cm⁻¹ and 1459–720 cm⁻¹, which are associated with proteins and polyphenols. The MCR analysis successfully separated the spectral profiles of Luwak coffee, Robusta coffee, and cocoa powder. Validation of the semi-quantitative analysis method showed a linear correlation between the loading matrix and the actual concentration, yielding R² values of 0.9714 for Luwak coffee, 0.9482 for Robusta coffee, and 0.9302 for cocoa powder. The accuracy test results showed recovery percentages of 86.29% (Luwak), 102.10% (Robusta), and 87.60% (Cocoa) in single-component samples, and 83.45% (Luwak), 110.01% (Robusta), and 83.73% (Cocoa) in two-component samples. These results indicate that the MCR method is accurate and reliable for multicomponent analysis.
date: 2026-01-21
status: published
author list: authors
type: EPrint
type: ThesisEPrint
is part of: repository
has document: http://digilib.uin-suka.ac.id/id/document/1045859
has version: http://digilib.uin-suka.ac.id/id/document/1045859
has published: http://digilib.uin-suka.ac.id/id/document/1045859
has document: http://digilib.uin-suka.ac.id/id/document/1045860
has version: http://digilib.uin-suka.ac.id/id/document/1045860
has published: http://digilib.uin-suka.ac.id/id/document/1045860
has document: http://digilib.uin-suka.ac.id/id/document/1045887
has document: http://digilib.uin-suka.ac.id/id/document/1045888
has document: http://digilib.uin-suka.ac.id/id/document/1045889
has document: http://digilib.uin-suka.ac.id/id/document/1045890
has document: http://digilib.uin-suka.ac.id/id/document/1045891
has document: http://digilib.uin-suka.ac.id/id/document/1045892
has document: http://digilib.uin-suka.ac.id/id/document/1045893
has document: http://digilib.uin-suka.ac.id/id/document/1045894
subject: 540 Kimia

http://digilib.uin-suka.ac.id/id/document/1045859
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Text)
has file: 22106030036_BAB-I_IV-atau-V_DAFTAR-PUSTAKA.pdf
has part: 22106030036_BAB-I_IV-atau-V_DAFTAR-PUSTAKA.pdf

http://digilib.uin-suka.ac.id/id/document/1045860
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Text)

UIN SUNAN KALIJAGA YOGYAKARTA
type: Organization

FAKULTAS SAINS DAN TEKNOLOGI, UIN SUNAN KALIJAGA YOGYAKARTA
type: Organization

NIM.: 22106030036 Della Dewinta Syawalia
type: Person
given name: NIM.: 22106030036
family name: Della Dewinta Syawalia

http://digilib.uin-suka.ac.id/id/document/1045887
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045888
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045889
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045890
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045891
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045892
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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http://digilib.uin-suka.ac.id/id/document/1045893
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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has file: medium.jpg
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http://digilib.uin-suka.ac.id/id/document/1045894
type: Document
label: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA (Other)
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has file: small.jpg
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https://digilib.uin-suka.ac.id/id/eprint/75481/
title: HTML Summary of #75481 ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA
format: text/html
primary topic: ANALISIS ADULTERAN KOPI ROBUSTA DAN BUBUK KAKAO PADA KOPI LUWAK MENGGUNAKAN METODE SPEKTROSKOPI ATTENUATED TOTAL REFLECTANCE (ATR) - FOURIER TRANSFORM INFRARED (FTIR) DENGAN PENDEKATAN KEMOMETRIKA

540 Kimia
type: Concept