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THE SUSTAINABLE TECHNOLOGIES FOR ORANGE AND
PURPLE SWEETPOTATOES (STOPS)
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STOPS TEAM
Tuskegee University Eunice Bonsi Conrad Bonsi Prosper Doamekpor Desmond Mortley Robert Zabawa Penn State University Thomas Gill Leland Glenna Janelle Larson
International Collaborators Kwame Offei, Univ. Ghana Fafali Azaglo, CEO Selasie Farms & Groceries Stephen Nutsugah, Director CSIR-Ghana/SARI Wisdom Plahar Director, Food Research Institute Joseph Apedo, Farmer Leader Sena Ahiabor Francis & Flora Amagloh UDS/SARI
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Stops
• GOAL:
Use nutrition-based education to introduce new technologies in the sweetpotato value chain
• FOCUS:
Integrating nutrition and production (horticulture) of OSP and PSP for nutritional health
Bio-availability of nutrients to reduce vitamin A and Fe deficiencies
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Stops
• Target Audience • Women Processing of sweetpotato puree & flour
Reformulating traditional recipes with
sweetpotatoes for home consumption
Developing new sweetpotato products
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Stops
• Target Audience • Youth and Children The concept of changing
food behavior starts with children & youth – influence adults
Elohim Senior High School
St. Monica’s Junior High School
SOS Children’s Village
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Stops
• Target Audience • Farmers Clean vine
multiplication Improved cultural
practices Improved
postharvest handling
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Stops
• Project Advantages
• Uses existing farming systems with similar crops -does not require additional land/labor
• Fosters community self-reliance through inclusion of all stakeholders, leading to sustainable development of orange and purple sweetpotato value chains
• Provides opportunities for enhanced incomes for farmers and value-added linkages such as processors and bakers
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Stops
• Project Advantages
• Sweetpotato as a "one stop shop" (roots and leave) for nutrition and health
• SP grown year round for both leaves and roots.
• Traditional leaves are sporadic and irregular. SP leaves are used to when the traditional leaves are scarce or unavailable.
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Stops
Interrelated factors directly affect nutritional outcomes • Production • Processing • Consumption
Technologies revolve around 5 broad areas: Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
Improved production practices to increase yields
New methods to increase value
Reformulating traditional recipes with sweetpotato (flour, leaves) for nutritive value
Introduce new products with sweetpotato flour and puree to increase general consumption
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
Varieties and Breeding Lines
• TU-1-12 Jewel
TU-2-12 TU Purple
• TU-3-12 B-63
TU-4-12 Beauregard
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
Varieties and Breeding Lines
• TU-2-12 TU Purple
-100
0
100
200
300
400
500
600
Ant
hocy
anin
con
tent
(µg
KE
/g)
Sweetpotato Flour
Anthocyanin Content of Sweetpotato Flours
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
Varieties and Breeding Lines
• TU-2-12 TU Purple
87.9
131.5
76.3
129.9
7.8 4.5
0
20
40
60
80
100
120
140
160
β-C
arot
ene
Con
tent
(µg
/g)
Sweetpotato Flour Samples
β-Carotene Content
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
Varieties and Breeding Lines
• TU-2-12 TU Purple
254.9
283.4 297.8
161.8 145.9
102.5
0
50
100
150
200
250
300
350
SPF-CA-P SPF-CA-Up SPF-CN OSPF-TU PSPF-TU SPG
Tot
al P
hen
olic
s (m
g G
AE
/100
g)
Total Phenolics Content - Sweetpotato Flours
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
• TU-3-12 B-63 (TU Orange) • Minerals – Ca, Fe, P (tips); K (2-400mg),
P, Ca, Mn, Na, Fe, Cu, Mg, Zn (roots) • Starch -16-25% (8-12% in tips = dietary
fiber • Protein – 1-5% (4-6% leaves) • Vitamins – • Betacarotene (5-15 mg/100g • C – 10-20 mg (as ascorbic acid) • E – 4 mg • Thiamine • Riboflavin • Niacin
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Introduction of new more nutritious sweetpotato varieties (OSP, PSP)
• Vine Multiplication • University of Ghana • CRI • SARI • Farmer Leaders • Joseph Apedo • Sena Ahiabor
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HortCRSP STOPS Project Sweetpotato Clean Vine Distribution
Grower 2Bawku
Grower 1Navrongo
Grower 2Daboya Road
Grower 1Nyankpala
SARI 2Demonstration
Bawku
Grower-MultiplierNorthern Region
Tiring Community
Grower-MultiplierUpper East Region
SARIRegistry of Clean
Vines and Demonstration
Nyankpala
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Cultural - bed preparation and
Improved bed preparation
Ridges Mounds
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Improved production practices to enhance yields
Harvesting/Post harvesting
• Cultural grading
Improved grading
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Improved production practices to enhance yields
Harvesting/Post harvesting
• Cultural packaging, storage
and marketing Improved storage and marketing
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New methods to increase value
• Processing of sweetpotato products • Chips (Solar Drying)
• Flour
• Development of new products
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Solar Dryers Use in SP Processing
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Reformulating Traditional Recipes with sweetpotato
• Functional foods
• Bread
• MAYVITA complementary infant food
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Introduce new products with sweetpotato flour and puree
• Tea, sugar, buns, butter bread)
• Golden Sika bread
• Purtompoto (purple sweetpotato gruel)
• Potagourt
.
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Outcomes • Clean vine production,
maintenance, and distribution established for successful demonstration and adoption by local farmers.
• Bakers are still very interested in producing orange sweetpotato bread and are in touch with farmers for sustained local production.
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Outcomes Schools and organizations
(SOS Children’s Village and Shea Butter Women’s Cooperative, St. Monica’s; Elohim) have established and are maintaining sweetpotato gardens, and incorporating O & PSP into their menus and/or selling the roots at market.
Have identified seed company to multiply vines for farmers at minimum fee
Identifying pathways for adoption, from farmer/ production to consumption