An economic evaluation of the fermentative production of lactic acid from wheat flour

2000 ◽  
Vol 75 (2) ◽  
pp. 119-126 ◽  
Author(s):  
Christina Åkerberg ◽  
Guido Zacchi
2018 ◽  
Vol 156 ◽  
pp. 01018 ◽  
Author(s):  
Siswo Sumardiono ◽  
Bakti Jos ◽  
Denny Firmansyah ◽  
Rahmi Hidayatunajah ◽  
Isti Pudjihastuti

Food security should be supported in an effort to utilize local products into import substitution products. Cassava starch has the potential to be developed into semi-finished products in the form of flour or starch which does not contain gluten but can inflate large baking process, potentially as a substitute for wheat flour-the main ingredient for making bread. The characteristic of the starch is influenced by the type of starch composition and structure. Natural starch has physicochemical properties i.e. a long time cooking and pasta formed hard. These constraints allow us to modify cassava starch by a combination of lactic acid hydrolysis and drying with rotary UV system. Modified cassava starch is expected to be used as a substitute for wheat flour. The aim of the research which is a combination of lactic acid hydrolysis and drying using a rotary UV system is to examine the optimum operating conditions in the drying process of starch hydrolysis with parameter the physicochemical and rheological properties of modified cassava starch. The initial process study is to hydrolyze cassava starch using lactic acid. Furthermore, hydrolyzed cassava starch is then dried using UV light in the rotary dryers system. There are a variety of changing variables, i.e. time of irradiation cassava starch-lactic acid hydrolysis products in the rotary UV light and air drying temperature. The research results show that modified starch has a better characteristic than the natural starch. From the analysis, the best point of swelling power, solubility and baking expansion is consequently 15.62 g/g; 24.19 %; 2.21 ml/gr. The FTIR result shows that there is no significant difference of the chemical structure because the starch modification only change the physical characteristics. From the SEM analysis, we can know that the size of the starch’s granule changes between the natural starch and the modified starch..


Sarwahita ◽  
2015 ◽  
Vol 12 (1) ◽  
pp. 54-62
Author(s):  
I. Gusti Ayu Ngurah S

ABSTRAK  Pengabdian ini mempunyai tujuan untuk  memberikan pengetahuan dan pengajaran mengenai pembuatan tepung mocaf dan penggunaannya sebagai bahan dasar pengganti tepung terigu dalam pembuatan mie sehingga dapat membantu ibu-ibu di Desa Jaya Sakti dalam memenuhi kebutuhan mereka membuat mie dari tepung mocaf dengan harapan hasil produk dapat dijual sehingga dapat menambah income bagi keluarga mereka. Khalayak sasaran adalah Ibu-ibu PKK dan warga sekitar Desa Jaya Sakti. Pelatihan ini di laksanakan dalam satu kali pertemuan, Pertemuan dilakukan di rumah Kepala Desa Jaya Sakti Muaragembong Bekasi Pertemuan diawali dengan pembukaan kemudian memberikan materi dan praktek pembuatan tepung mocaf, dan pembuatan mie dari tepung mocaf. Untuk bahan dasar mie tepung mocaf digunakan yang telah siap pakai. Tepung  Mocaf  (Modified  Cassava  Flour),  adalah produk tepung  dari ubi kayu/singkong yang diperoses menggunakan prinsip memodifikasi sel ubi kayu dengan cara fermentasi. Mikroba yang tumbuh menyebabkan perubahan karakteristik pada tepung yang dihasilkan, yaitu naiknya viskositas, kemampuan gelasi, daya rehidrasi, dan kemudahan melarutkan. Mikroba   juga   menghasilkan   asam-asam   organic,   terutama   asam   laktat   yang   akan terimbibisi dalam tepung, dan ketika tepung itu diolah akan menghasilkan aroma dan citra rasa khas, yang dapat menutupi aroma dan citra rasa ubi kayu yang cenderung tidak menyenangkan konsumen. Tekstur dan warna tepung mocaf ini lebih halus dan lebih putih dari tepung terigu. Untuk   pengembangan   lebih   lanjut,   maka   tepung   mocaf   diaplikasikan   untuk membuat mie, selain nilai jualnya lebih baik lagi karena menghasilkan produk yang lain dan langsung bisa di konsumsi. Dari hasil kegiatan pengabdian ini terlihat antusias dari para peserta, karena mereka senang mendapatkan pengetahuan baru yang dapat mereka praktekkan di rumah masing- masing.   ABSTRACTThis dedication aims to provide knowledge and teaching about making mocaf flour and its use as a substitute of wheat flour in making noodles so it can help mothers in Jaya Sakti Village in fulfilling their need to make noodles from mocaf flour in the hope that the product can be sold so that can increase income for their families.Target audiences are PKK mothers and residents around Jaya Sakti Village. Trainingthis was held in one meeting, the meeting was held at the Village Head's houseJaya Sakti Muaragembong BekasiThe meeting begins with the opening then gives the material and practice of making mocaf flour, and making noodles from mocaf flour. For basic materials used mocaf flour noodles that have been ready to use.Mocaf Flour (Modified Cassava Flour), is a flour product of cassava / cassava that is processed using the principle of modifying cassava cells by fermentation. Increased microbes cause characteristic changes in the resulting flour, namely increased viscosity, gelability, rehydration, and ease of dissolution. Microbes also produce organic acids, especially lactic acid which will be added to the flour, and when the flour is processed it will produce a distinctive flavor and taste image, which can mask the flavor and taste of cassava that tend to discomfort the consumer. The texture and color of the mocaf flour is finer and whiter than wheat flour.For further development, then the mocaf flour is applied tomaking noodles, in addition to the selling price is better because it produces other products and can directly in consumption.From the results of this devotional activity look enthusiastic from the participants, because they love to get new knowledge that they can practice in their homes.


2010 ◽  
Vol 101 (16) ◽  
pp. 6494-6498 ◽  
Author(s):  
Bo Zhao ◽  
Limin Wang ◽  
Cuiqing Ma ◽  
Chunyu Yang ◽  
Ping Xu ◽  
...  

2016 ◽  
Vol 54 ◽  
pp. 202-213 ◽  
Author(s):  
Karen Gonzalez ◽  
Sihem Tebbani ◽  
Filipa Lopes ◽  
Aurore Thorigné ◽  
Sébastien Givry ◽  
...  

2000 ◽  
Vol 66 (9) ◽  
pp. 4084-4090 ◽  
Author(s):  
Paola Lavermicocca ◽  
Francesca Valerio ◽  
Antonio Evidente ◽  
Silvia Lazzaroni ◽  
Aldo Corsetti ◽  
...  

ABSTRACT Sourdough lactic acid bacteria were selected for antifungal activity by a conidial germination assay. The 10-fold-concentrated culture filtrate of Lactobacillus plantarum 21B grown in wheat flour hydrolysate almost completely inhibited Eurotium repens IBT18000, Eurotium rubrum FTDC3228,Penicillium corylophilum IBT6978, Penicillium roqueforti IBT18687, Penicillium expansum IDM/FS2,Endomyces fibuliger IBT605 and IDM3812, Aspergillus niger FTDC3227 and IDM1, Aspergillus flavus FTDC3226,Monilia sitophila IDM/FS5, and Fusarium graminearum IDM623. The nonconcentrated culture filtrate ofL. plantarum 21B grown in whole wheat flour hydrolysate had similar inhibitory activity. The activity was fungicidal. Calcium propionate at 3 mg ml−1 was not effective under the same assay conditions, while sodium benzoate caused inhibition similar toL. plantarum 21B. After extraction with ethyl acetate, preparative silica gel thin-layer chromatography, and chromatographic and spectroscopic analyses, novel antifungal compounds such as phenyllactic and 4-hydroxy-phenyllactic acids were identified in the culture filtrate of L. plantarum 21B. Phenyllactic acid was contained at the highest concentration in the bacterial culture filtrate and had the highest activity. It inhibited all the fungi tested at a concentration of 50 mg ml−1 except forP. roqueforti IBT18687 and P. corylophilumIBT6978 (inhibitory concentration, 166 mg ml−1). L. plantarum 20B, which showed high antimold activity, was also selected. Preliminary studies showed that phenyllactic and 4-hydroxy-phenyllactic acids were also contained in the bacterial culture filtrate of strain 20B. Growth of A. niger FTDC3227 occurred after 2 days in breads started with Saccharomyces cerevisiae 141 alone or with S. cerevisiae andLactobacillus brevis 1D, an unselected but acidifying lactic acid bacterium, while the onset of fungal growth was delayed for 7 days in bread started with S. cerevisiae and selectedL. plantarum 21B.


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