scholarly journals Perbaikan Proses Fermentasi Biji Kakao Non Fermentasi dengan Penambahan Biakan Murni Saccharomyces cerevisiae, Lactobacillus lactis dan Acetobacter aceti (Fermentation Process Improvement of Cocoa Beans with Addition of Non Fermentation Inoculum of Saccharomyces cerevisiae, Lactobacillus lactis and Acetobacter aceti)

2017 ◽  
Vol 36 (4) ◽  
pp. 410 ◽  
Author(s):  
Mulono Apriyanto ◽  
Sutardi Sutardi ◽  
Eni Harmayani ◽  
Supriyanto Supriyanto

Most cocoa beans produced by Indonesian farmers are non-fermented dry cocoa whose quality can be improved by the fermentation. However, it requires the optimization for fermentation process. This study was conducted to determine the effect of giving a pure culture of Saccharomyces cerevisiae, Lactobacillus lactis and Acetobacter aceti bacteria in fermented dry cocoa beans. Dry beans obtained by drying the wet (fresh) cocoa beans in the cabinet dryer, and subsequently their levels of reduction sugar were determined. The experiments of the fermentation of dry cocoa beans were conducted in a box (p = 120 cm, l = 80 cm, t = 40 cm) with aeration hole (diameter of 1 cm) and the distance between holes was 10 cm. Cocoa beans were incubated for 6 days and without inverted during fermentation. The studied treatments were A1 (without the addition of inoculum (control)), A2 (inocolum was added at the beginning of the incubation), A3 (inoculum was added at the beginning of fermentation (Saccharomyces cerevisiae). After 24 hours of experiment, Lactobacillus lactis was added while Acetobacter aceti was added after 48 hours. Each treatment was repeated three times and observed every two days. The levels of reducing sugars, etanol, acidity, yeasts and acetic acid bacteria population in the fermentation pulp/liquid were observed during the fermentation process. In order to determine the quality of dry beans, several aspects have been measured such as: pH, fermentation index and split test on dry beans after fermentation.ABSTRAKSebagian besar biji kakao yang dihasilkan petani Indonesia merupakan kakao kering non-fermentasi yang kualitasnya masih dapat ditingkatkan dengan metode fermentasi, tetapi dibutuhkan optimasi agar fermentasi dapat berjalan dengan baik. Penelitian ini dilakukan untuk mengetahui pengaruh dari pemberian biakan murni murni Saccharomyces cerevisiae, Lactobacillus lactis dan Acetobacter aceti pada fermentasi biji kakao kering jemur. Biji kakao kering jemur diperoleh dengan mengeringkan biji kakao basah (segar) dalam kabinet dryer, dan ditentukan kadar gula reduksinya. Percobaan fermentasi biji kakao kering jemur dilakukan dalam kotak fermentasi (p = 120 cm, l = 80 cm, t = 40 cm) yang diberi lubang aerasi berdiameter 1 cm dan jarak antar lubang 10 cm. Biji kakao difermentasi selama 6 hari dan tanpa dibalik selama fermentasi. Perlakuan dalam penelitian ini adalah A1 (tanpa penambahan biakan murni murni (kontrol)), A2 (pemberian biakan murni murni diawal fermenatasi), A3 (pemberian biakan murni murni secara bertahap selama fermentasi (Saccharomyces cerevisiae), setelah jam ke 24 diberikan Lactobacillus lactis dan setelah jam ke 48 diberikan Acetobacter aceti. Setiap perlakuan diulangi tiga kali dan diamati tiap dua hari sekali. Kadar gula reduksi, kadar etanol, kadar asam tertitrasi, populasi khamir, dan bakteri asam asetat dalam pulp/cairan fermentasi diamati selama proses fermentasi. Untuk mengetahui kualitas biji kakao kering jemur dilakukan pengukuran pH, indeks fermentasi dan uji belah pada biji kakao kering jemur setelah fermentasi.

2018 ◽  
Vol 37 (3) ◽  
pp. 302
Author(s):  
Mulono Apriyanto ◽  
Sutardi Sutardi ◽  
Supriyanto Supriyanto ◽  
Eni Harmayani

The aims of the study was to improve quality of cocoa bans by fermentation of sun dried cocoa beans. The fermentation variations were conducted as follows: first, fermentation without the addition of inoculum (control), the second treatment using inoculum of S. cerevisiae (FNCC 3056), L. lactis (FNC 0086) and A. aceti (FNCC 0016), each of 108 cfu/g  given simultaneously at the beginning of fermentation.and the third treatment wassequential administration, i.e: yeast at the initial fermentation, lactic acid bacteria after 24 hours fermentation, and acetic acid bacteria after 48 hr of fermentation third with the same microbial population with the second treatment. The fermentation was conducted for120 hours. The fermentation temperature were controlled during fermentation as follows: 35 °C  for the first 24 hours, 45 °C  for the next second 24- hours, 55 °C the third 24 hours and 35 °C for the last 48 hours of fermentation. The results showed that after the rehydration, pulp composition of dry beans could be used as a substrate for fermentation. During fermentation, dry cocoa beans showed reduction of total sugar content, pH and total polyphenols for all the three treatments. Cut test of dried cocoa beans during the fermentation showed the increasing percentage of brown color of the three treatments. Reducing sugar and fermentation indexes increasedfor all treatments during fermentation. Concentration of ethanol, lactic acid and acetic acid reached highest level at 24, 60, and 108 hours of fermentationfor all treatments.  Highest populations of S. cerevisiae, L. lactis and A. aceti of three treatments obtained at 24, 48 and 72 hours of fermentation. After fermentation and roasting, dry beans produced hydrophobic amino acids as precursors of flavor and volatile compounds.                                               ABSTRAKPenelitian ini bertujuan untuk mengetahui perubahan sifat kimia pada fermentasi biji kakao kering jemur. Biji kakao kering jemur yang diperoleh dari petani memiliki kadar air yang tidak seragam. Guna menimalkan kegagalan fermentasi maka biji kakao kering jemur diperoleh melalui pengeringan biji kakao segar menggunakan kabinet dryer dengan sebelumnya dikondisikan pada suhu seperti pengeringan dengan sinar matahari, dan masing ditentukan kadar gula reduksinya. Percobaan fermentasi biji kakao kering dilakukan fermentasi pada wadah fermentasi dengan jumlah biji 150 g setiap wadah. Sebelum difermentasi terlebih dahulu biji kakao kering jemur direhidrasi agar didapat kadar air mendekati biji segar, kemudian biji kakao kering jemur diinkubasi selama enam hari dan tanpa dibalik selama fermentasi. Setiap perlakuan diulangi tiga kali dan diamati tiap 24 jam sampai 120 jam. Kadar gula reduksi (kontrol 4,49–11,45%, inokulum diawal (IA) 4,69–11,55%, inokulum bertahap (IB) 4,64–11,54%), kadar asam tertitrasi (kontrol 4,48–6,45%, inokulum diawal (IA) 4,64–6,39%, inokulum bertahap (IB)  4,45–6,59%), populasi Saccharomycescerevisiae (kontrol 5,56–7,28 (log CFU/g), inokulum diawal (IA) 6,45–8,75 (logCFU/g), inokulum bertahap (IB) 6.88 – 8.99 (logCFU/g), Lactobacillus lactis (kontrol 6,66–8,15 (log CFU/g), inokulum diawal (IA) 7,65–8,21(log CFU/g), inokulum bertahap (IB) 7,66–8,95 (log CFU/g) dan Acetobacter aceti (kontrol 4,26–6,95% (log CFU/g), inokulum diawal (IA) 4,85–7,40 (log CFU/g), inokulum bertahap (IB) 4,35–7,91 (log CFU/g)) dalam pulp fermentasi diamati selama proses fermentasi. Untuk mengetahui kualitas biji kakao dilakukan pengukuran pH (kontrol 5,67–3,98, inokulum diawal (IA) 5,67–3,55, inokulum bertahap (IB) 5,67–3,50), kadar etanol (kontrol 0,3–0,5%, inokulum diawal (IA) 0,3–0,52%, inokulum bertahap (IB) 0,35–0,53%) dan indeks fermentasi selama fermentasi (kontrol 0,31–0,88, inokulum diawal (IA) 0,32–0,99, inokulum bertahap (IB) 0,33–1,03).Kata kunci: Acetobacter aceti; biji kakao kering jemur; fermentasi; Lactobacillus lactis; Saccharomyces cerevisiae


2017 ◽  
Vol 6 (1) ◽  
pp. 12-18
Author(s):  
Mulono Apriyanto

Most cocoa beans are produced by farmers Indonesia is dry cocoa drying whose quality can be improved by the fermentation method, but it takes more optimization for fermentation can run well. This study aimed to determine changes in the chemical properties of fermented dry cocoa beans drying. Dry beans drying is obtained by drying the wet cocoa beans (fresh) in a cabinet dryer with a previously conditioned at a temperature such as drying in the sun, and each determined the reduction of sugar levels. Experiments fermented dry cocoa beans are fermented in the fermentation container with the amount of 100 grams of seed per container. Before the first fermented dry cocoa beans drying on rehydration to obtain a moisture content approaching fresh beans, dry beans drying then incubated for six days and without inverted during fermentation. Each treatment was repeated three times and observed every 24 hours to 120 hours. Reduction sugar, acid levels tertitrasi, the population of yeasts and acetic acid bacteria in fermented pulp was observed during the fermentation process. To determine the quality of dry beans drying measurement of pH and the fermentation index during fermentation.


2020 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto

Most cocoa beans are produced by farmers Indonesia is dry cocoa drying whosequality can be improved by the fermentation method, but it takes more optimizationfor fermentation can run well. This study aimed to determine changes in the chemicalproperties of fermented dry cocoa beans drying. Dry beans drying is obtained bydrying the wet cocoa beans (fresh) in a cabinet dryer with a previously conditionedat a temperature such as drying in the sun, and each determined the reduction ofsugar levels. Experiments fermented dry cocoa beans are fermented in thefermentation container with the amount of 100 grams of seed per container. Beforethe first fermented dry cocoa beans drying on rehydration to obtain a moisturecontent approaching fresh beans, dry beans drying then incubated for six days andwithout inverted during fermentation. Each treatment was repeated three times andobserved every 24 hours to 120 hours. Reduction sugar, acid levels tertitrasi, thepopulation of yeasts and acetic acid bacteria in fermented pulp was observed duringthe fermentation process. To determine the quality of dry beans drying measurementof pH and the fermentation index during fermentation.


Author(s):  
Jorge Daniel Fonseca Blanco ◽  
Martha Del Pilar López Hernandez ◽  
Laura Sabrina Ortiz Galeano ◽  
Jenifer Criollo Nuñez ◽  
María Denis Lozano Tovar

Cocoa fermentation process is fundamental to generate flavors and aromas that are characteristics of chocolate. In Colombia, this process is carried out by microbiota that spontaneously colonizes cocoa beans, therefore the quality of the fermentation is inconsistent. Taking into account that the fermentation of cocoa beans is carried out by a consortium of microorganisms, the aim of thisresearch was to describe the effect of the addition of a specific mixture of yeasts, acetic acid bacteria, and lactic acid bacteria on the physicochemical and organolepticcharacteristics of cocoa beans (clone CCN 51). Isolates of two yeasts (Wickerhamomyces anomalus and Debaryomyces hansenii), three acetic acid bacteria (AAB), (Gluconobacter japonicus, Acetobacter tropicalis, and Acetobacter pasteurianus) and three lactic acid bacteria (LAB) (Pediococcus acidilactici, Lactobacillus brevis, and Lactobacillus plantarum) obtained fromprevious cocoa fermentations selected for their pectinases and acid production capacities in a specific mixture were used. Using the micro-fermentation technique, the effect of a biological starter was evaluated under different viable microorganismsratios (Yeasts: LAB: AAB as follows, 1: 1: 1, 1: 2: 2, 1: 2: 1, 1: 1: 2, 2: 1: 1, 2: 2: 1, 2: 1: 2, and 2: 2: 2). The concentration of each microorganism was standardized at 1x107 cfu/mL, then the biomass of 4 mL for ratio 1 and 8 mL for ratio 2 of each suspension of microorganisms was added at time zero. Different doses of inoculum were 0%, 1%, 2%, 3%, 4%, and 5% v/w mL inoculum/g cocoa beans. A beneficial effecton the sensory quality of cocoa beans was evidenced by the addition of microorganisms; the best proportion of microorganisms was 2:1:2 (yeasts:LAB:AAB) and the best inoculum dose was 3% (v/w) showing lower acidity, astringency, and bitterness, and emphasizing the cocoa flavors, fruity, nutty, and panela malt. 


2020 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto

Most cocoa beans in Indonesia are traditionally produced by farmers using non fermented and sun drying method. Thequality of cocoa beans produced by farmer in yogyakarta may be improved by the fermentation method. However, it needsoptimization for best fermentation process. The aims of the study was to improve quality of cocoa bans by fermentation ofsun dried cocoa beans. The characteric fermented cocoa beans was determined by maesuring changes pH, acidity andfermentation indexs of cocoa beans during fermentation. This study used preconditioned cocoa beans to resamble obtainfrom the farmer. Preconditioning was done in order to get 15% mouisture content of pulp at same level as moisture contentof pulp from traditional process. Before fermentation, therefor sun dried cocoa beans was rehydrated to obtain a moisturecontent of pulp similiar to fresh beans pulp, and then fermentation was conducted for 120 hours. Changes in acidity andfermentation indexs of cocoa beans during fermentation were measured. The fermentation process used 3 level treatmenti.e. control (without inoculum), mixed culture of microbies added at the begining fermentation. The result show all cocoabeans acidity increase during fermentation from 4,48% to 6,45% for control, 4,64% to 6,39% for addition of inoculum atbegining of fermentation and from 4,45% to 6,59% for addition of inoculum at the begining and midle of fermentation andfermentation indexs of cocoa beans increase for all level of inoculum addition i.e. 0,31 to 0,88 for control, 0,32 to 0,99 foraddition of inoculum at the beginning fermentation and 0,33 to 1,03 for addition of inoculum at the beginning and midle offermentation. The study indicated that addition of mix culture microbies in fermetation improved the quality of cocoabeans that characterized by pH, acidity and fermentation indexs of cocoa beans.


2020 ◽  
Vol 8 (7) ◽  
pp. 1086 ◽  
Author(s):  
Johannes Delgado-Ospina ◽  
Samantha Triboletti ◽  
Valentina Alessandria ◽  
Annalisa Serio ◽  
Manuel Sergi ◽  
...  

Yeasts play an important role in the cocoa fermentation process. Although the most relevant function is the degradation of sugars and the production of ethanol, there is little understanding of the enzyme activities and attributes that allow them to survive even after drying. The present study explored the functional biodiversity of yeasts associated with Criollo Colombian cocoa fermented beans, able to survive after drying. Twelve species belonging to 10 genera of osmo-, acid-, thermo-, and desiccation-tolerant yeasts were isolated and identified from fermented and dry cocoa beans, with Pichia kudriavzevii and Saccharomyces cerevisiae standing out as the most frequent. For the first time, we reported the presence of Zygosaccharomyces bisporus in cocoa fermented beans. It was found that resistance to desiccation is related to the different degradation capacities of fermentation substrates, which suggests that associative relationships may exist between the different yeast species and their degradation products. Besides, the increased thermotolerance of some species was related to the presence of polyphenols in the medium, which might play a fundamental role in shaping the microbial community composition.


2020 ◽  
Vol 16 (1) ◽  
pp. 19
Author(s):  
NFN Misgiyarta ◽  
Anas Miftah Fauzi ◽  
Khaswar Syamsu ◽  
S Joni Munarso

<p>Kualitas biji kakao fermentasi rendah  karena kualitas starter mikroba untuk fermentasi biji kakao rendah. Seleksi starter mikroba diperlukan untuk mendapatkan starter yang unggul. Ada dua jenis starter, yaitu starter cair dan starter kering. Starter cair banyak digunakan untuk fermentasi biji kakao. Starter yang diuji adalah starter cair, yaitu starter Inoka, starter cair BB-Pasca, dan starter <em>yoghurt</em>. Seleksi starter mikroba dilakukan dengan memfermentasi pulp biji kakao selama 24 jam pada berbagai suhu fermentasi (20<sup>o</sup>C, 30<sup>o</sup>C, dan 40<sup>o</sup>C). Parameter yang diamati adalah jumlah total mikroba, laju pertumbuhan mikroba starter, tingkat konsumsi gula pereduksi oleh mikroba starter, total asam yang diproduksi, tingkat penurunan pH, dan peningkatan suhu fermentasi serta korelasi antara parameter pengamatan penelitian. Starter cair unggul yang terpilih adalah starter cair Inoka. Karakteristik starter Inoka adalah memiliki tingkat laju pertumbuhan μ = 0.470, konsumsi gula pereduksi oleh mikroba starter 12%, peningkatan asam total 7%, penurunan pH 5,2, dan peningkatan suhu fermentasi 1,56<sup>o</sup>C  serta korelasi antara parameter penelitian di atas 0,61.</p><p> </p><p><strong>Selection of Superior Liquid Starters for Cocoa Beans Fermentation</strong></p><p>The quality of fermented cocoa beans varies because the microbial starter for fermented cocoa beans varies. The selection of starter is needed to get a superior starter. The starter tested is a liquid starter, that is the Inoka starter, the BB-Pasca liquid starter, the yoghurt. The selection of starter is done by fermenting cocoa bean pulp for 24 hours at various fermentation temperatures (20<sup>o</sup>C, 30<sup>o</sup>C and 40<sup>o</sup>C). The parameters observed were total microbial count, microbial growth rate of starter, consumption of reducing sugars by starter microbes, total acid produced, decrease of pH, and increase of fermentation temperature and the correlation between the parameters of the study. The selected superior liquid starter is the Inoka liquid starter. The characteristics of Inoka starter are to have a growth rate of μ = 0.470, consumption of reducing sugars by starter microbes 12%, total acid increase of 7%, decrease in pH 5.2, and increase in fermentation temperature of 1.56<sup>o</sup>C and correlation between research parameters above 0.61.</p>


2017 ◽  
Vol 9 (2) ◽  
pp. 50-54
Author(s):  
Murna Muzaifa ◽  
Yusya Abubakar ◽  
Faitzal Haris

Fermentation process is the most crucial step in the formation of the flavor and aroma of the cocoa bean. Cocoa bean fermentation triggers an array of chemical changes within the bean.These chemical changes are vital to the development of the complex and much-loved flavour known as “chocolate”. Fermentation involves a number of specific microorganisms that play a role during fermentation. The aim of this research was to analized microorganism growth profil of Aceh cacao during fermentation. Fermentation was conducted on 6 days with  different aerations (agitation every 24 and 48 hours). The result showed that growth profile of microorganism during fermentation relatively  had similar trend. Yeast dominated on the early fermentation, lactid bacteria reached the higest population on day 3 and acetic acid bacteria on day 4. Better quality of fermented cacao was resulted on every 48 hours of agitation  that reached 70,19% of full fermentation.


Author(s):  
Tiparat TIKAPUNYA

The purpose of this research is to investigate the quality-related physical, chemical, and microbiological changes in Thai cocoa beans during fermentation in 2 types of wooden containers. The results will compose a book of guidelines for good Thai cocoa fermentation in order to educate Thai farmers. Fresh Thai cocoa beans have a low pH value (5.0 - 5.5) compared to those from other countries in general (6.0 - 7.0). However, fermented temperature is able to reach 40 - 45 °C in 6 days, which is a main criteria for finishing cocoa fermentation. The color of fresh cocoa beans changes from white to brown within 2 days; after that, cocoa beans are mixed from the top to the bottom of the containers. Three groups of microorganism are evaluated with 3 different sampling points in wooden containers. The results reveal that yeast is grown quickly in 2 days on the top of containers, and then acetic acid bacteria and lactic acid bacteria are grown by the utilized yeast’s metabolites. These behaviors were found in both of the 2 wooden containers; however, a heap of cocoa beans (200 - 250 kgs) in a wooden box showed better quality of cocoa fermentation than a small volume (40 - 50 kgs) in a wooden tray. HIGHLIGHTS Understanding changes in Thai cocoa beans fermentation based on traditional method Two type of wooden containers applied for comparing all quality-related cocoa fermentation Proper cocoa beans fermentation process composed to a book of guideline for Thai Farmers GRAPHICAL ABSTRACT


2019 ◽  
Author(s):  
mulono apriyanto bin sugeng rijanto

Perbaikan Proses Fermentasi Biji Kakao Non Fermentasi dengan Penambahan Biakan Murni Saccharomyces cerevisiae, Lactobacillus lactis, dan Acetobacter aceti


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