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Mochi is a cake made from glutinous rice flour with other ingredients and then steamed. White sweet potato flour is used as a substitute because it contains high levels of fiber, with the addition of elephant ginger extract, which is expected to be able to neutralize the unpleasant taste and scent of white sweet potato flour. The aim of this study was to determine the right formulation in order to obtain white sweet potato flour substitution mochi and a high concentration of elephant ginger extract. This study used a completely randomized design (CRD), which consisted of two factors, namely the concentration of glutinous rice flour and white sweet potato flour (90:10, 80:20, and 70:30) and the percentage of elephant ginger extract (to 100 ml of water) (1.5%, 3%, and 4.5%). The best results of the chemical analysis were white sweet potato flour 30 g and ginger extract 4.5%, with a moisture content of 23.66%, an ash content of 0.25%, a total sugar content of 7.64%, and fiber of 2.60%. Based on the results of the physical analysis, the colour L*47.62 (bright brown), a* -4.68 (slightly green), b* 12.20 (yellowish) and a hardness value of 8.90 N, gumminess of 6.27 N, chewiness of 1.73 N, cohesiveness of 0.71 N, and adhesiveness of 1.17 N. Mochi with white sweet potato flour substitution and concentration of elephant ginger extract can be a nutritions food and a source of fiber.

Diabetes Mellitus is a metabolic disorder marked by hyperglycemia resulting from the body's failure to synthesize insulin. Nutritional therapy is effective in controlling glucose levels by providing low glycemic index and high in antioxidant foods, including sweet potatoes and red beans. The primary objective of this study was to elucidate the influence of wheat flour replacement with composite flour consisting of sweet potato and red bean flour on anthocyanin content and the sensory preferences of muffins. A single-factor completely randomized approach was used in this experimental investigation. The treatment involved substituting wheat flour with a composite flour consisting of sweet potato and red bean flours, in the following ratios: 30:20:50 (F1), 30:35:35 (F2), 30:50:20 (F3), and 100:0:0 (F0, control). Anthocyanin content was analyzed using the differential pH method, while sensory preferences were evaluated by 30 semi-trained panelists using a hedonic scale test. The results showed that substituting wheat flour with composite flour high in sweet potato content increased anthocyanin levels. However, the substitution of wheat flour generally reduced the overall sensory preference for muffins. Despite this, formulations with a higher proportion of sweet potato flour improved the preference scores. In conclusion, the substitution of wheat flour with composite flour rich in sweet potato increased anthocyanin content and improved sensory preferences for color, aroma, and taste in muffins

Muffin is a wheat flour-based snack with gluten content and high glycemic index, so substitution is needed to reduce the impact of excess consumption on health. The ingredients used are purple sweet potato and red bean which have high content of energy, carbohydrates, protein and low GI. The study aimed to determine the effect of substituting wheat flour with sweet potato flour and red bean flour on the nutritional value of muffins. This was an experimental study with a single-factor completely randomized design (CRD) with one control group and three treatment groups with the proportion of wheat flour: purple sweet potato flour: red bean flour namely 100:0:0 (P0), 30:20:50 (P1), 30:35:35 (P2), dan 30:50:20 (P3). They were repeated 3 times.  The results showed that there was an effect of wheat flour substitution with sweet potato flour and red bean flour on the nutritional value of muffins (p<0.001). The highest average nutritional value of each treatment is water content P3 (34.45%), ash content P3 (3.06%), protein P1 (9.92%), fat P1 (9.39%), carbohydrate P3 (44.67%), and energy P1 (294.23 kcal). The nutritional value of 50g muffins is in accordance with the quality standards according to SNI and the standard requirements for children, but the fat content is above the standard if it is consumed as snacks for DM patients, therefore it needs to reformulate to fulfill the standard.

This research aims to develop takoyaki by substituting wheat flour using white sweet potato flour (Ipomea Batatas Linneas) and adding powdered creamer.  White sweet potatoes were chosen for their high nutritional content and ability to improve texture and taste. Apart from that, processing white sweet potatoes into flour can extend the shelf life and increase the economic value of local agricultural products. The addition of powdered creamer can produce takoyaki with a softer texture and provides a creamy touch which increases the appeal of the final product. Organoleptic tests were carried out on 40 panelists to assess the criteria for shape, color (outside and inside), aroma, texture, taste and overall preference for whether it was well received by consumers. The research results showed that the proportion of 90% wheat flour and 10% white sweet potato flour produced the best quality takoyaki based on organoleptic test scores.  Apart from that, takoyaki products with a proportion of wheat flour and white sweet potato flour with the addition of powdered creamer contain 12.85% protein, 4.03% fat, 41.05% carbohydrates which have a high fiber content compared to conventional takoyaki. The cost of raw materials for takoyaki with the proportion of wheat flour and white sweet potato flour (Ipomea Batatas Linneas) is Rp. 40,365. The selling price of Takoyaki with a proportion of wheat flour and white sweet potato flour (Ipomea Batatas Linneas) is 19,000/portion.  

Vermicelli is an alternative food to replace rice, a type of noodle that is still in great demand by the public. Vermicelli is a popular food made from rice flour processed through an extrusion process so that it is shaped like a thread. The substitution of potato starch and the addition of celery extract will increase the antioxidant activity content of the vermicelli. The purpose of this research was produce vermicelli which has high antioxidant activity and produce vermicelli with characteristics according to Indonesian National Standard No. 01-2975-2006. Complete Randomized Design factorial with two factors were used in this research. The first factor was the ratio of rice flour and potatoes flour (10:90, 15:85, 20:80). The second factors was the levels of celery extract to water addition of dough (0,78; 1,04; 1,56%). The vermicelli were then tested for moisture content, ash content, crude fiber content and antioxidant activity as well as sensory analysis. The data analyse using Analysis of Variance (ANOVA). The best treatment was on ratio of substitution potatoes flour 20:80(g) with celery extract (0,78%). The fermicelli produced has the following characteristics water 10,65%, ash content 0,52%, fiber content 3,45% and 19,25% antioxidant activity. Femicelli produced in accordance with the quality requirements of SNI No. 01- 2975-2006. The sensory test of fermicelli that having color for dry fermicelli (3,82) color is yellowish dark green, color for wet fermicelli (3.62) is slightly faded green, texture (2,68) is not chewy, after taste (3.36) the taste of celery that lingers after being swallowed and overall preference (3,42).

The cereal products available in the market mostly focus only on practicality and ignore the nutritional content. It is necessary to increase the nutritional content of these products by using local Indonesian raw materials such as sweet potatoes and corn.  The objectives of this study are: 1) to determine the effect of temperature and proportion of purple sweet potato flour and corn flour on the characteristics of cereals produced, 2) to assess the level of preference of panelists for the physical, chemical and sensory qualities of cereals produced. The study design used a factorial randomized design complete with a proportion treatment of purple sweet potato flour and corn. Test parameters include water content, degree of swelling, water absorption, texture, antioxidants, and sensory evaluation. The conclusion in this study is that the comparative treatment of purple sweet potato flour and corn and temperature did not have a real effect on water content, degree of development, water absorption index (IPA), water solubility index (IKA), texture and antioxidants but had an effect on sensory properties

Cookies are a type of patisserie product that is in great demand by the public. Most types of cookies need wheat flour as the basic ingredient, so that causing increased imports of wheat flour. To get around the amount of use of wheat flour so can be used flour from local food ingredients such as yellow sweet potato flour. Purpose of the research: 1) Knowing the composition of the ingredients that used in the making of oatmeal cookies with yellow sweet potato flour substitution; 2) Knowing the process of making oatmeal cookies with yellow sweet potato flour substitution; 3) Knowing the level of people's preference towards oatmeal cookies with yellow sweet potato flour substitution. The methods used in this research are the method of literature, experimentation, documentation, questionnaire, sensory testing, hedonic testing and data analysis. Yellow sweet potato flour used was 15%, 30%, 45% of the weight of the flour. The results showed that oatmeal cookies with yellow sweet potato flour were the most preferred and accepted by the panelists as products with the substitution of yellow sweet potato flour as much as 30%.