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• Green Solvent Extraction and Quality Characteristics of Passion Fruit Seed Oil (Passiflora edulis Sims var. edulis)

  Nguyen Thi Thu Nga, Nguyen Xuan Bac, Lai Thi Ngoc Ha

  Received: May 14, 2020 / Published: May 15, 2020

   Abstract PDF

  The extraction of oil from passion fruit seeds with acetone, ethanol, ethyl acetate, isopropanol, and hexane was studied. The effects of the variables, namely type of solvent, material to solvent ratio, temperature, and extraction time, were investigated. The highest extraction yield was 78.52%, which was obtained using ethyl acetate with a material to solvent ratio of 1/10 at room temperature (28oC) for 4h using a shaker. This yield was similar to that obtained when using hexane as a solvent. Our results indicate that ethyl acetate can replace the conventional hexane solvent in the extraction of oil from passion fruit seeds. The high content of polyunsaturated fatty acids in passion fruit seed oil suggests that this product has good potential for use in the human food, cosmetic, and pharmaceutical industries.

• Effects of Binder Type and Inclusion Level on the Physical and Nutritional Values of Fruit By-product Pellet Feeds

  Nguyen Thi Vinh, Vu Thi Ngan, Bui Thi Bich, Phuong Huu Pha, Bui Huy Doanh, Nguyen Thi Phuong Giang, Bui Quang Tuan

  Received: Jul 28, 2025 / Accepted: Sep 15, 2025 / Published: Sep 30, 2025

   Abstract PDF

  This study investigated the effects of binder type (molasses and cassava flour) and inclusion level (5% and 10%) on the physical and nutritional characteristics of ruminant pellet feeds formulated with pineapple and passion fruit peels. Four treatments were evaluated: 5% molasses, 10% molasses, 5% cassava flour, and 10% cassava flour, each replicated three times in a completely randomized design. The results showed that pellets with 10% molasses had the greatest durability (95.67%), a high density (475.72 mg mL-1), and elevated sugar (18.44%) and saponin (9.47%) contents, alongside improved concentrations of key amino acids such as lysine (1.29%) and glutamic acid (3.12%). By contrast, the 10% cassava flour treatment produced the lowest pellet durability (92.11%), density (468.06 mg mL-1), and amino acid levels, particularly lysine (0.47%) and aspartic acid (1.01%). Overall, molasses, especially at a 10% inclusion, proved more effective than cassava flour in enhancing both the physical quality and nutritional value of fruit by-product pellets. These results highlight the potential of utilizing fruit processing residues with natural binders to produce sustainable, cost-effective pellet feeds for ruminant production systems.