scholarly journals Microbial deterioration of white variety sweet potato (Ipomoea batatas) under different storage structures

2010 ◽  
Vol 1 (1) ◽  
pp. 10 ◽  
Author(s):  
Charles Tortoe ◽  
Mary Obodai ◽  
Wisdom Amoa-Awua
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Fungal Species ◽  
Aspergillus Ochraceus ◽  
Consumer Acceptability ◽  
Microbial Count ◽  
Fungal Population ◽  
White Variety ◽  
The Past ◽  
Storage Structures

Post-harvest protection of white variety sweet potato (Ipomoea batatas) has been dealt with rarely in the past, although it is comparatively easy to grow and has high consumer acceptability in Ghana. Microbial deterioration of sweet potato roots stored in three different storage structures was studied. The sweet potato roots initially cured for 7 and 14 days were stored in traditional, pit, and clamp storage structures for a maximum of 28 days. For the 7 days-cured sweet potato roots, the bac­teria population in the three different storage structures increased by 1.2-2.3 log cfu/g whereas for the 14 days-cured roots, the bacteria population was 0.1-1.0 log cfu/g within 28 days of storage. The fungal population in the 14 days-cured sweet potato roots was higher than in the 7 days-cured sweet potato roots by 0.6-1.6 log cfu/g for 28 days of storage. For both the 7 and 14 days-cured sweet potato roots, the sweet potato roots stored for 28 days in the three different storage structures had a higher microbial count compared to the sweet potato roots stored for 14 days. Aspergillus flavus was the most dominant fungal species occurring in all of the three different storage structures followed by A. niger, Rhizopus stolonifer, Tricho-derma viride, Fusarium oxysporum, Penicillium digitatum, Cladosporium herbarum,and Aspergillus ochraceus, in that order.

RESISTANCE IN SWEET POTATOES TO THE SWEETPOTATO WEEVIL, CYLAS FORMICARIUS ELEGANTULUS (SUMMERS)1

1985 ◽  
Vol 20 (3) ◽  
pp. 345-350 ◽  
Author(s):  
Michael A. Mullen ◽  
Alfred Jones ◽  
Donald R. Paterson ◽  
Thurman E. Boswell
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
The Other ◽  
Sweet Potatoes ◽  
Sweetpotato Weevil ◽  
The Past ◽  
Cylas Formicarius ◽  
Cylas Formicarius Elegantulus

Fourteen sweet potato [Ipomoea batatas (L.) Lam] cultivars and varieties were examined for resistance to the sweetpotato weevil [Cylas formicarius elegantulus (Summers)] in artificially infested fields in Yoakum, TX. One cultivar W-226, appeared to have a greater level of resistance than the other cultivars examined. The data are compared to earlier resistance trials to show that the germplasm presently available has greater levels of resistance than that in previous years. The resistance levels of “Resisto” and “Regal” for the past 4 years are discussed.

scholarly journals Effect of Vine Length and Leaf Removal on Growth and Yield of Sweet Potato [Ipomoea batatas (L.)] in the Wet Middleveld of Eswatini

2021 ◽  
pp. 74-82
Author(s):  
N. Mkhatshwa ◽  
M. P. Mabuza ◽  
N. S. Zubuko
Keyword(s):  
Sweet Potato ◽  
Crop Production ◽  
Ipomoea Batatas ◽  
Agricultural Research ◽  
Block Design ◽  
Growth And Yield ◽  
Leaf Removal ◽  
Sweet Potatoes ◽  
White Variety ◽  
Research Activities

Sweet potato (Ipomoea batatas L.) is an economically important food crop in Eswatini. Since its introduction, numerous agronomic research activities were carried out in agricultural research centers, non-governmental organizations, and universities. However, information on the correct vine length for planting to improve sweet potato root yield in Eswatini is scanty. Therefore, this study aimed at helping farmers with the correct vine length to be used for improved growth and yield of sweet potatoes. A field experiment was conducted at the Luyengo campus, crop production farm during the 2019/2020 crops season. It was laid in a Randomized Complete Block Design (RCBD) in a factorial arrangement with three replicates. The treatments were vines planted with or without leaves and different vine lengths; 25 cm, 30 cm, and 35 cm. Kenya white variety was used. Data were collected on growth and yield parameters. Results showed that leaf removal yielded significantly (P<0.05) lower than non-leaf removal. This may be attributed to delayed photosynthetic activity in the former.  The Vine length had no significant effect on yield. It is concluded that vines with leaves be used as planting material, and the length of vines to be used for planting should be 25 to 30 cm.

scholarly journals Effectiveness of the Entomopathogenic Fungal Species Metarhizium anisopliae Strain NCAIM 362 Treatments against Soil Inhabiting Melolontha melolontha Larvae in Sweet Potato (Ipomoea batatas L.)

2020 ◽  
Vol 6 (3) ◽  
pp. 116
Author(s):  
Barna Putnoky-Csicsó ◽  
Szende Tonk ◽  
Attila Szabó ◽  
Zsuzsanna Márton ◽  
Franciska Tóthné Bogdányi ◽  
...  
Keyword(s):  
Biological Activity ◽  
Sweet Potato ◽  
Open Field ◽  
Ipomoea Batatas ◽  
Larval Survival ◽  
Fungal Species ◽  
Field Conditions ◽  
Soil Parameters ◽  
Fungal Treatment ◽  
Melolontha Melolontha

The effect of fungal entomopathogen M. anisopliae strain NCAIM 362 against M. melolontha larvae in sweet potato was tested under open field conditions when crop management included compost supply and soil cover (agro-foil or agro-textile). Additionally, the effect of M. anisopliae same strain against M. melolontha was compared with the effect of α-cypermethrin under greenhouse conditions. Soil microbial community using Illumina sequencing and soil biological activity were tested as possible parameter influencing M. anisopliae effect. According to the results, compost supply and textile cover may enhance the effectiveness of M. anisopliae under open field conditions, while no effect of fungal treatment was detected under greenhouse conditions. Even if soil parameters (chemical composition, bacterial, and biological activity) were identical, the effect of α-cypermethrin against M. melolontha larvae was significant: lower ratio of larval survival and less damaged tubers were detected after the chemical treatment. Our results suggest that M. anisopliae strain NCAIM 362 is not effective to control M. melolontha larvae, further pieces of research are needed to test other species of the Metarhizium genus to find an effective agent for sustainable pest control in sweet potato.

scholarly journals Orange-Fleshed Sweet Potato (Ipomoea batatas L (Lam)) Composite Spaghetti has Good Consumer Acceptability and a Significant Source of Dietary Vitamin A

2020 ◽  
Vol 1 (1) ◽  
pp. 25-30
Author(s):  
Atinpoore Atuna Richard ◽  
◽  
Deborah Nyarkoa ◽  
Kweku Amagloh Francis ◽  
◽  
...  
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Wheat Flour ◽  
Ipomoea Batatas ◽  
Dietary Vitamin ◽  
Consumer Acceptability ◽  
Carotene Content ◽  
Overall Acceptability ◽  
Orange Fleshed Sweet Potato ◽  
Β Carotene

Objective In this study, orange-fleshed sweet potato (OFSP) puree was substituted with wheat flour (48:52%) in the production of spaghetti, herein denoted VitAspag and compared with three existing whole wheat brands (Local, Oba and Spaghetti). Methods Hundred untrained panel list evaluated the colour, taste, stickiness, firmness and overall acceptability using a 5-point hedonic scale. The proximate and β-carotene content of VitAspag was carried out using standard methods and compared with the most preferred existing brand, Spaghetti. Results The sensory scores for all spaghetti brands were above 3, an indication of good consumer acceptability. There was no significant (p>0.05) difference among vitAspag, Local, Oba and Spaghetti with respect to all sensory attributes considered. The moisture, ash and fibre content ranged from 8.90% - 9.50%, 1.15% - 1.20% and 0.42% - 0.62%, respectively. Spaghetti, had a significantly higher protein (2.02% vs. 0.05%; p<0.001) and carbohydrates (81.0% vs. 79.7%; p = 0.024) content compared with VitAspag. VitAspag, was also significantly (p<0.001) higher in β-carotene, almost 1.6 times higher than Spaghetti. A 125 g and 500 g of vitAspag per day will respectively meet 10% and 9.03% of the daily vitamin A requirement of children <5 years (300 µg RAE/day) and pregnant and lactating mothers (1,300 µg RAE/day). Conclusion Ranking VitAspag similar to the existing commercial brand is an indication that consumers will equally accept it. OFSP puree could be composited with wheat flour up to (48:52%) on as is basis to make spaghetti and will contribute to a significant amount of dietary intake of vitamin A.

Batatins VII-X, glycolipid ester-type dimers from sweet potato (Ipomoea batatas)

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

Pengaruh Profilaksis Ekstrak Ubi Jalar Ungu (Ipomoea batatas L.) terhadap Kadar Malondialdehida Hepar Tikus Putih (Rattus norvegicus) Jantan Galur Wistar yang Diinduksi Karagenan

2018 ◽  
Vol 15 (2) ◽  
pp. 146
Author(s):  
BRILIAN DINANTI ◽  
FITRI HANDAJANI
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Wistar Rats ◽  
Group Method ◽  
Control Group ◽  
Intraplantar Injection ◽  
Significant Difference ◽  
Male Wistar Rats ◽  
Potato Extract ◽  
Purple Sweet Potato

<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

Analisis Nutrisi Umbi Ubi Jalar (Ipomoea batatas (L.) Lam.) untuk Konsumsi Bayo dan Anak-anak Suku Dani di Distrik Kurulu Kabupaten Jayawijaya

Agrotek ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Andrew B. Pattikawa ◽  
Antonius Suparno ◽  
Saraswati Prabawardani
Keyword(s):  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Nutritional Value ◽  
Animal Feed ◽  
Ash Content ◽  
Infants And Children ◽  
Chemical Analyses ◽  
Food Crop ◽  
Sweet Potatoes ◽  
Development Center

<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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