Pengaruh grind size dan tipe portafilter terhadap kualitas espresso pada mesin espresso sistem pneumatik

Rochmad Winarso - [ https://orcid.org/0000-0002-7111-1053 ]
Slamet Khoeron
Rianto Wibowo
Darmanto Darmanto

Abstract


Penelitian ini bertujuan untuk mengetahui pengaruh temperature, grind size dan jenis portafilter terhadap kadar total dissolved solids (TDS) dan extraction yield (EXT) dan menemukan pengaturan mesin kopi espresso sistem pneumatik yang optimal untuk mencapai kualitas terbaik. Pada penelitian ini dilaksanakan dengan menguji karakteristik kopi espresso yaitu kadar total dissolve solid (TDS) dan extraction yield (EXT) akibat pengaruh temperatur, grind size dan tipe portafilter. Desain eksperimen faktorial penuh (full factorial design of experiments - FFD) digunakan untuk mengidentifikasi variabel yang memiliki pengaruh yang signifikan pada kualitas espresso yang dihasilkan. Data penelitian diolah menggunakan analisa varian (analysis of variance - ANOVA) dengan bantuan perangkat lunak Minitab. Hasil penelitian menunjukkan bahwa temperature, grind size dan tipe portafilter secara  statistik memiliki pengaruh yang signifikan dengan tingkat kepercayaan 100% dalam mempengaruhi kadar total dissolved solids (TDS). Grind size dan tipe portafilter secara statistik juga memiliki pengaruh signifikan terhadap extraction yield (EXT) dengan tingkat kepercayaan 100%. Sebaliknya, nilai p-value yang lebih tinggi untuk faktor temperatur menunjukkan bahwa faktor tersebut secara statistik tidak memiliki pengaruh signifikan terhadap extraction yield (EXT). Hasil optimasi respons untuk kadar total dissolved solids (TDS) dan extraction yield (EXT) menghasilkan niai composite desirability (D) sebesar 0,7255. Dari nilai tersebut dapat disimpulkan bahwa kondisi optimal yang ditemukan melalui plot optimasi cukup dapat diandalkan dan sesuai dengan model regresi yang telah diuji secara kredibel. Variabel yang dapat menghasilkan kadar total dissolved solids (TDS) dan extraction yield (EXT) paling optimal didapat dari pengaturan temperatur 1000C, grind size 2.8 dan penggunaan un-pressurized portafilter. Kadar total dissolved solids (TDS) dan extraction yield (EXT) yang dihasilkan dari metode respon optimasi ini masing-masing sebesar 11,5252% dan 22,348%.


Keywords


Kopi Espresso;Sistem Pneumatik;;Grind Size;Tipe Portafilter

Teks Lengkap:

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Referensi


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DOI: https://doi.org/10.24176/crankshaft.v6i2.11021

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