To begin, combine predefined portions of rice flour, gracilaria gracilis, and chlorella vulgaris in the equipment, and add approximately 30%water to the mixture. After a few minutes of mixing, followed by extruding the pasta, using the equipment, cut it manually. To produce chifferi, dry the pasta at 68 degrees Celsius for 42 minutes, followed by an additional five hours and 30 minutes at 76 degrees Celsius, simulating an industrial process.
Finally, vacuum seal the samples and store them in a dark place at room temperature. Take one gram sample in a glass crucible with a filter bottom and position it in the fiber analyzer. Add 150 milliliters of preheated 1.25%sulfuric acid, and two milliliters of anti-foaming agent to the column of each crucible.
Remove the solvent and rinse the crucible three times with deionized water to prepare the sample for the basic hydrolysis. After washing the crucibles three times with 150 milliliters of acetone, carefully transfer those to an oven set at 150 degrees Celsius for one hour. Record the final weight.
Transfer the crucibles to a muffle furnace, set at 500 degrees Celsius for three hours, and then record the final weight. To determine the fatty acids profile, add two milliliters of 2%sulfuric acid solution in methanol to a 50 milligram sample. Heat the mixture at 80 degrees Celsius for two hours.
Then, cool the mixture to room temperature and add one milliliter of ultrapure water and two milliliters of N-heptane to each sample. After vortexing the mixture for one minute, centrifuge it for five minutes. Later, recover the upper N-heptane phase containing the fatty acid methyl esters and transfer it to gas chromatography vials.
Analyze the samples in a gas chromatograph equipped with a TR-FAME capillary column, an auto sampler, and a flame ionization detector. Determine the fatty acid profile by comparing the resulting retention times with a standard. Incubate porcelain crucibles for three hours at 105 degrees Celsius.
Allow them to cool in a desiccator, and then record their weights. After incubating 10 grams of the sample, as demonstrated previously, calculate its moisture content using the displayed equation. Then, transfer the crucibles with the dried samples to an incinerator heated to 525 degrees Celsius for four hours.
After cooling the samples, record their weight. To assess consumer acceptance, use chifferi pasta samples cooked in distilled water for eight minutes. Conduct sensory tests in individual sensory booths located in a sensory analysis laboratory.
Evaluate the visual appearance, color, texture, odor, sea taste, overall taste, overall evaluation, and purchase intent of the samples. The pasta received ratings of five and six on a hedonic scale of one to nine for sea taste and visual appearance, respectively. The pasta had a purchase intention score of five and an overall appreciation score of six.
