scholarly journals Short communication. Effects of storage time and boiling on root tuber colour in two sweet potato (Ipomoea batatas L. (Lam.)) cultivars

2004 ◽  
Vol 2 (4) ◽  
pp. 570
Author(s):  
H. R. Martí
2020 ◽  
Vol 4 (1) ◽  
pp. 14-23
Author(s):  
Isana Supiah Yosephine Louise

AbstrakInulin merupakan bahan dasar obat yang banyak terkandung dalam umbi-umbian lokal, seperti ubi kayu/singkong (Manihot esculenta), uwi (Dioscorea spp.), ubi jalar (Ipomoea batatas), dan gembili (Dioscorea esculenta L.), yang secara luas belum diupayakan untuk diproduksi secara besar-besaran. Umbi-umbian lokal umumnya hanya dijual sebagai bahan mentah yang harganya relatif murah dan tidak dapat disimpan dalam waktu yang relatif lama. Umumnya dikonsumsi dengan cara direbus, digoreng atau diolah menjadi makanan tradisional, belum diproses menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan waktu penyimpanan yang relatif lebih lama. Pada kegiatan pemberdayaan masyarakat pedesaan ini telah dilakukan penyuluhan, pemberian keterampilan, dan pendampingan masyarakat dusun Krajan Wedomartani Ngemplak Sleman untuk secara mandiri mampu mengolah umbi-umbian lokal menjadi produk tepung fermentasi, tepung non fermentasi, dan ekstrak inulin. Pada kegiatan ini bahan baku yang digunakan adalah umbi singkong, uwi ungu, dan ubi jalar ungu. Proses fermentasi umbi dilakukan menggunakan jamur monascus angka atau monascus purpureus. Ekstrak inulin dilakukan dengan menggunakan pelarut alkohol. Produk tepung fermentasi dengan bahan baku umbi singkong, uwi ungu, dan ubi jalar ungu masing-masing memiliki randemen sebesar 52%, 43%, dan 40%; sedangkan ekstrak inulin memiliki randemen sesesar 7,47%, hanya saja produk inulin belum optimum bila ditinjau dari sisi warna senyawa, masih perlu dilakukan proses lanjutan untuk memperoleh produk inulin yang sesuai standar pasar. Hasi angket menunjukkan bahwa sebagian besar peserta menyatakan kegiatan seperti ini sangat bermanfaat, dan secara umum penyajian materi oleh tim pengabdi dapat diterima dengan mudah dan jelas oleh peserta. Sebagian besar peserta menyatakan bahwa metoda penyampaian materi sesuai, artinya, secara umum metoda penyampaian materi dalam kegiatan ini dapat diterima dengan mudah oleh masyarakat sasaran. Sebagian besar peserta menyatakan bahwa kegiatan seperti ini sangat membantu membuka wawasan masyarakat desa untuk dapat mengolah umbi-umbian lokal, yang semula hanya dikonsumsi dengan direbus atau digoreng atau dijual mentah dengan harga realtif murah menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan memiliki daya simpan relatif lebih lama. Kata kunci: inulin, monascus angka, umbi-umbian lokal, membuka wawasan, masyarakat desa The Production of Tubers-Based Inulin as The Basic Ingredients of Medicine AbstractInulin is a raw material of medicine which is contained in local tubers, such as cassava (Manihotes culenta), Dioscorea spp., sweet potato (Ipomoea batatas L.), and Dioscorea esculenta L., which is not widely strived in mass production. Local tubers commonly sold as food raw material which is relatively cheap and cannot be stored for a long time. Generally, the tubers consumed by boiling, fried or processed to traditional food. It has not processed to be more valuable product, has relatively high price, and has relatively longer the storage time. In the empowerment activity of rural community, it has been conducted counseling, providing soft skill, and community assistance in Krajan, Wedomartani, Ngemplak, Sleman to independently be able producing local tubers became fermented flour, unfermented flour, and inulin extract product. In this activity, the raw material were cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato (Ipomoea batatas var Ayumurasaki). Tubers fermentation process was conducted using monascus angka or monascus purpureus mold. Inulin extract was produced using alcohol solvent. Fermented flour product from cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato have yield as respectively 52%, 43%, and 40%; meanwhile inulin extract has yield as 7.47%, although inulin product had not reach optimum point regarding on the color of compound. It still needs further process to gain standardized commercially inulin product. Questioners showed that mostly of the attendances stated the activity very useful, and generally the presentation from empowerment team can be delivered easily and clearly to the communities.  Mostly of the attendances stated that the method of presentation is suitable, which means generally the presentation method in this activity can be accepted easily by the communities. Mostly of the attendances stated that the activity is very helpful for them to gain the knowledge of local tubers processing, which was originally consumed only with boiled or fried or sold uncooked with the relatively cheap price to be more valuable product, has relatively high price, and has relatively longer the storage time  Key words: inulin, monascus angka, local tubers, empowerment, rural community


2020 ◽  
Vol 4 (1) ◽  
pp. 24-32
Author(s):  
Aditia Pramudia Sunandar ◽  
Fiki Zida Farhana ◽  
Rizki Qonitati Chandra Chahyani

AbstrakInulin merupakan bahan dasar obat yang banyak terkandung dalam umbi-umbian lokal, seperti ubi kayu/singkong (Manihot esculenta), uwi (Dioscorea spp.), ubi jalar (Ipomoea batatas), dan gembili (Dioscorea esculenta L.), yang secara luas belum diupayakan untuk diproduksi secara besar-besaran. Umbi-umbian lokal umumnya hanya dijual sebagai bahan mentah yang harganya relatif murah dan tidak dapat disimpan dalam waktu yang relatif lama. Umumnya dikonsumsi dengan cara direbus, digoreng atau diolah menjadi makanan tradisional, belum diproses menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan waktu penyimpanan yang relatif lebih lama. Pada kegiatan pemberdayaan masyarakat pedesaan ini telah dilakukan penyuluhan, pemberian keterampilan, dan pendampingan masyarakat dusun Krajan Wedomartani Ngemplak Sleman untuk secara mandiri mampu mengolah umbi-umbian lokal menjadi produk tepung fermentasi, tepung non fermentasi, dan ekstrak inulin. Pada kegiatan ini bahan baku yang digunakan adalah umbi singkong, uwi ungu, dan ubi jalar ungu. Proses fermentasi umbi dilakukan menggunakan jamur monascus angka atau monascus purpureus. Ekstrak inulin dilakukan dengan menggunakan pelarut alkohol. Produk tepung fermentasi dengan bahan baku umbi singkong, uwi ungu, dan ubi jalar ungu masing-masing memiliki randemen sebesar 52%, 43%, dan 40%; sedangkan ekstrak inulin memiliki randemen sesesar 7,47%, hanya saja produk inulin belum optimum bila ditinjau dari sisi warna senyawa, masih perlu dilakukan proses lanjutan untuk memperoleh produk inulin yang sesuai standar pasar. Hasi angket menunjukkan bahwa sebagian besar peserta menyatakan kegiatan seperti ini sangat bermanfaat, dan secara umum penyajian materi oleh tim pengabdi dapat diterima dengan mudah dan jelas oleh peserta. Sebagian besar peserta menyatakan bahwa metoda penyampaian materi sesuai, artinya, secara umum metoda penyampaian materi dalam kegiatan ini dapat diterima dengan mudah oleh masyarakat sasaran. Sebagian besar peserta menyatakan bahwa kegiatan seperti ini sangat membantu membuka wawasan masyarakat desa untuk dapat mengolah umbi-umbian lokal, yang semula hanya dikonsumsi dengan direbus atau digoreng atau dijual mentah dengan harga realtif murah menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan memiliki daya simpan relatif lebih lama. Kata kunci: inulin, monascus angka, umbi-umbian lokal, membuka wawasan, masyarakat desa ECOBRICK as The Utilization of Plastic in Biology Laboratory and Foodcourt Yogyakarta State University AbstractInulin is a raw material of medicine which is contained in local tubers, such as cassava (Manihotes culenta), Dioscorea spp., sweet potato (Ipomoea batatas L.), and Dioscorea esculenta L., which is not widely strived in mass production. Local tubers commonly sold as food raw material which is relatively cheap and cannot be stored for a long time. Generally, the tubers consumed by boiling, fried or processed to traditional food. It has not processed to be more valuable product, has relatively high price, and has relatively longer the storage time. In the empowerment activity of rural community, it has been conducted counseling, providing soft skill, and community assistance in Krajan, Wedomartani, Ngemplak, Sleman to independently be able producing local tubers became fermented flour, unfermented flour, and inulin extract product. In this activity, the raw material were cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato (Ipomoea batatas var Ayumurasaki). Tubers fermentation process was conducted using monascus angka or monascus purpureus mold. Inulin extract was produced using alcohol solvent. Fermented flour product from cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato have yield as respectively 52%, 43%, and 40%; meanwhile inulin extract has yield as 7.47%, although inulin product had not reach optimum point regarding on the color of compound. It still needs further process to gain standardized commercially inulin product. Questioners showed that mostly of the attendances stated the activity very useful, and generally the presentation from empowerment team can be delivered easily and clearly to the communities.  Mostly of the attendances stated that the method of presentation is suitable, which means generally the presentation method in this activity can be accepted easily by the communities. Mostly of the attendances stated that the activity is very helpful for them to gain the knowledge of local tubers processing, which was originally consumed only with boiled or fried or sold uncooked with the relatively cheap price to be more valuable product, has relatively high price, and has relatively longer the storage time  Key words: inulin, monascus angka, local tubers, empowerment, rural community


2020 ◽  
Vol 4 (1) ◽  
pp. 24-32
Author(s):  
Aditia Pramudia Sunandar ◽  
Fiki Zida Farhana ◽  
Rizki Qonitati Chandra Chahyani

AbstrakInulin merupakan bahan dasar obat yang banyak terkandung dalam umbi-umbian lokal, seperti ubi kayu/singkong (Manihot esculenta), uwi (Dioscorea spp.), ubi jalar (Ipomoea batatas), dan gembili (Dioscorea esculenta L.), yang secara luas belum diupayakan untuk diproduksi secara besar-besaran. Umbi-umbian lokal umumnya hanya dijual sebagai bahan mentah yang harganya relatif murah dan tidak dapat disimpan dalam waktu yang relatif lama. Umumnya dikonsumsi dengan cara direbus, digoreng atau diolah menjadi makanan tradisional, belum diproses menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan waktu penyimpanan yang relatif lebih lama. Pada kegiatan pemberdayaan masyarakat pedesaan ini telah dilakukan penyuluhan, pemberian keterampilan, dan pendampingan masyarakat dusun Krajan Wedomartani Ngemplak Sleman untuk secara mandiri mampu mengolah umbi-umbian lokal menjadi produk tepung fermentasi, tepung non fermentasi, dan ekstrak inulin. Pada kegiatan ini bahan baku yang digunakan adalah umbi singkong, uwi ungu, dan ubi jalar ungu. Proses fermentasi umbi dilakukan menggunakan jamur monascus angka atau monascus purpureus. Ekstrak inulin dilakukan dengan menggunakan pelarut alkohol. Produk tepung fermentasi dengan bahan baku umbi singkong, uwi ungu, dan ubi jalar ungu masing-masing memiliki randemen sebesar 52%, 43%, dan 40%; sedangkan ekstrak inulin memiliki randemen sesesar 7,47%, hanya saja produk inulin belum optimum bila ditinjau dari sisi warna senyawa, masih perlu dilakukan proses lanjutan untuk memperoleh produk inulin yang sesuai standar pasar. Hasi angket menunjukkan bahwa sebagian besar peserta menyatakan kegiatan seperti ini sangat bermanfaat, dan secara umum penyajian materi oleh tim pengabdi dapat diterima dengan mudah dan jelas oleh peserta. Sebagian besar peserta menyatakan bahwa metoda penyampaian materi sesuai, artinya, secara umum metoda penyampaian materi dalam kegiatan ini dapat diterima dengan mudah oleh masyarakat sasaran. Sebagian besar peserta menyatakan bahwa kegiatan seperti ini sangat membantu membuka wawasan masyarakat desa untuk dapat mengolah umbi-umbian lokal, yang semula hanya dikonsumsi dengan direbus atau digoreng atau dijual mentah dengan harga realtif murah menjadi produk yang lebih bermanfaat, memiliki nilai jual relatif tinggi, dan memiliki daya simpan relatif lebih lama. Kata kunci: inulin, monascus angka, umbi-umbian lokal, membuka wawasan, masyarakat desa ECOBRICK as The Utilization of Plastic in Biology Laboratory and Foodcourt Yogyakarta State University AbstractInulin is a raw material of medicine which is contained in local tubers, such as cassava (Manihotes culenta), Dioscorea spp., sweet potato (Ipomoea batatas L.), and Dioscorea esculenta L., which is not widely strived in mass production. Local tubers commonly sold as food raw material which is relatively cheap and cannot be stored for a long time. Generally, the tubers consumed by boiling, fried or processed to traditional food. It has not processed to be more valuable product, has relatively high price, and has relatively longer the storage time. In the empowerment activity of rural community, it has been conducted counseling, providing soft skill, and community assistance in Krajan, Wedomartani, Ngemplak, Sleman to independently be able producing local tubers became fermented flour, unfermented flour, and inulin extract product. In this activity, the raw material were cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato (Ipomoea batatas var Ayumurasaki). Tubers fermentation process was conducted using monascus angka or monascus purpureus mold. Inulin extract was produced using alcohol solvent. Fermented flour product from cassava, Dioscorea alata L. syn. D. atropurpurea Roxb., and purple sweet potato have yield as respectively 52%, 43%, and 40%; meanwhile inulin extract has yield as 7.47%, although inulin product had not reach optimum point regarding on the color of compound. It still needs further process to gain standardized commercially inulin product. Questioners showed that mostly of the attendances stated the activity very useful, and generally the presentation from empowerment team can be delivered easily and clearly to the communities.  Mostly of the attendances stated that the method of presentation is suitable, which means generally the presentation method in this activity can be accepted easily by the communities. Mostly of the attendances stated that the activity is very helpful for them to gain the knowledge of local tubers processing, which was originally consumed only with boiled or fried or sold uncooked with the relatively cheap price to be more valuable product, has relatively high price, and has relatively longer the storage time  Key words: inulin, monascus angka, local tubers, empowerment, rural community


Author(s):  
Lesi Dike Gbaraneh ◽  
Victoria Wilson

A field experiment was conducted at Rivers Institute of Agricultural Research and Training (RIART), Rivers State University, Port Harcourt, Nigeria with the objective of evaluating the influence of seedbed types and vine harvesting time on shoot and tuber yields of sweet potato and make recommendations for optimal and sustainable production. The treatments consisted of three seedbed types (ridge, flat, and mound), and four vine harvesting time (8, 12, 16 and 20 weeks after planting). The experiment was laid out as a 3 x 4 in factorial arrangement fitted into a randomized complete block design (RCBD) and replicated three times. The results revealed that planting of sweet potato on ridge produced the highest root tuber yield followed by mound seedbeds; planting on flat seedbed produced the highest shoot (vine) and lowest tuber yields. While planting on ridge seedbed and harvesting the vines 16 weeks after planting (when about 80% of the growth phase of the plant was completed) produced optimum shoot yield which could be used as fodder with no significant effect on root tuber yield. In general, vine harvesting during active growth phase of the sweet potato plant seriously depressed tuber yield more than it affected shoot production. These results therefore stand as our recommendations for sweet potato production in the South-south zone of Nigeria.


Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
D Rosas-Ramírez ◽  
R Pereda-Miranda
Keyword(s):  

2018 ◽  
Vol 15 (2) ◽  
pp. 146
Author(s):  
BRILIAN DINANTI ◽  
FITRI HANDAJANI

<p>Liver is an organ with complex metabolism. When the liver is inflamed, cellular immunity will defend against inflammatory agents by stimulating immune cells to produce reactive oxygen species (ROS). Excessive ROS accumulation cause oxydative stress with increased  liver malondialdehyde (MDA) level. Some researches showed that purple sweet potato contain flavonoids (anthocyanins) that functioned as antioxydants. This study aimed to show the prophylactic effect of purple sweet potato extract to the liver MDA level of male Wistar rats induced by carrageenan.</p><p>This study used post-only control group method using 18 male Wistar rats divided into 3 groups: group of rats without treatment, group of rats induced by 0,1 ml of 1% carrageenan by intraplantar injection on day-8, and group of rats given with 872 mg/kgBW of purple sweet potato extract for 7 days and induced by 0,1 ml of 1% carrageenan. In the end of the study, the liver MDA levels were measured by Thio-Barbituric Acid method on each groups.</p><p>The results of One-Way ANOVA test showed there was no significant difference (p = 0,290) between group of rats without treatment (<em>x̅</em>= 207,50) and group of rats induced by carrageenan (<em>x̅</em>=233,17). Then, there is no significant difference (p = 0.978) between group of rats induced by carrageenan and group of rats given with prophylactic purple sweet potato extract and induced by carrageenan (<em>x̅</em>= 232,50).</p><p>The conclusion of this study is giving intraplantar injection of carrageenan can increase liver MDA level insignificantly and giving prophylactic purple sweet potato extract has an effect to decrease the liver MDA level of rats induced by carragenan insignificantly because it contains anthocyanins as antioxidants.</p><p> </p><strong>Keywords: </strong>Liver, <em>Ipomoea batatas</em> L., Malondialdehyde, Anthocyanins


Agrotek ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Andrew B. Pattikawa ◽  
Antonius Suparno ◽  
Saraswati Prabawardani

<em>Sweet potato is an important staple food crop especially for the local people of Central Highlands Jayawijaya. There are many accessions that have always been maintained its existence to enrich their various uses. Traditionally, sweet potato accessions were grouped based on the utilization, such as for animal feed, cultural ceremonies, consumption for adults, as well as for infants and children. This study was aimed to analyze the nutritional value of sweet potatoes consumed by infants and children of the Dani tribe. Chemical analyses were conducted at the Laboratory of Post-Harvest Research and Development Center, Cimanggu, Bogor. The results showed that each of 4 (four) sweet potato accessions which were consumed by infants and children had good nutrient levels. Accession Sabe showed the highest water content (72.56%), vitamin C (72.71 mg/100 g), Fe (11.85 mg/100 g), and K levels (130.41 mg / 100 grams). The highest levels of protein (1.44%), fat (1.00%), energy (154.43 kkal/100 gram), carbohydrate (35.47%), starch (30.26%), reducing sugar (3.44%), riboflavin (0.18 mg/100 g), and vitamin A (574.40 grams IU/100 were produced by accession Manis. On the other hand, accession Saborok produced the highest value for ash content (1.32%), vitamin E (28.30 mg/100 g), and ?-carotene (64.69 ppm). The highest level of crude fiber (1.81 %) and thiamin (0.36 mg/100 g) was produced by accession Yuaiken.</em>


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