Quality evaluation of sweet potato products

With the aim to fully exploit the by-products obtained after the industrial extraction of starch from sweet potatoes, a cascading approach was developed to extract high-value molecules, such as proteins and pectins, and to valorize the solid fraction, rich in starch and fibrous components. This fraction was used to prepare new biocomposites designed for food packaging applications. The sweet potato residue was added to poly(3-hydroxybutyrate-co-3-hydroxyvalerate) in various amounts up to 40 wt % by melt mixing, without any previous treatment. The composites are semicrystalline materials, characterized by thermal stability up to 260 °C. For the composites containing up to 10 wt % of residue, the tensile strength remains over 30 MPa and the strain stays over 3.2%. A homogeneous dispersion of the sweet potato waste into the bio-polymeric matrix was achieved but, despite the presence of hydrogen bond interactions between the components, a poor interfacial adhesion was detected. Considering the significant percentage of sweet potato waste used, the biocomposites obtained show a low economic and environmental impact, resulting in an interesting bio-alternative to the materials commonly used in the packaging industry. Thus, according to the principles of a circular economy, the preparation of the biocomposites closes the loop of the complete valorization of sweet potato products and by-products.

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Determination of Starch in Sweet Potato Products and Other Plant Materials

Industrial & Engineering Chemistry Analytical Edition ◽

10.1021/i560136a004 ◽

1944 ◽

Vol 16 (12) ◽

pp. 736-739 ◽

Cited By ~ 24

Author(s):

Edward T. Steiner ◽

John D. Guthrie

Keyword(s):

Sweet Potato ◽

Plant Materials ◽

Potato Products

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Introduksi Produk Olahan Ubi Jalar Pada Anggota Ika Tanjung Sakti, Bandar Lampung

Dinamisia Jurnal Pengabdian Kepada Masyarakat ◽

10.31849/dinamisia.v4i2.2718 ◽

2020 ◽

Vol 4 (2) ◽

pp. 263-267

Author(s):

Neti Yuliana ◽

Dewi Sartika ◽

Samsu Udayana Nudin ◽

Novita Herdiana ◽

Pramita Sari Anungputri

Keyword(s):

Sweet Potato ◽

Sweet Potatoes ◽

Group Members ◽

Target Community ◽

Processed Products ◽

Nutritional Benefits ◽

Potato Products

Sweet potato is a non-rice carbohydrate food that has health and nutritional benefits, so it needs to be disseminated in the community. This community extention program aimed to increase the understanding of the target community regarding the diversification of sweet potatao processing into various rice substitution products, as well as providing knowledge of the benefits of sweet potato from the nutritional and health aspects. The participant audiences was the Tanjung Sakti IKA group members, Sukarame, Bandar Lampung. The method used was lecture, discussion, and evaluation. The results of the activity showed that the change percentage in participants' knowledge about the benefits of sweet potatoes increased by 85%, and that about the processed sweet potato products by 67-100% depending on the type of product. In general, participants consider counseling or introduction of sweet potatoes was useful. Keywords: Tanjung Sakti IKA, health and nutritional benefits, processed products, sweet potatoes

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