• 동아시아식생활학회지
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• 제22권4호
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• pp.550-557
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• 2012

The purpose of this study was to investigate the quality characteristics of Maejakgwa prepared with Eriobotrya japonica leaf powder (0, 1, 3, 5, 7%) substituted for flour. The pH and density of Maejakgwa dough significantly decreased in response to addition of all levels of E. japonica leaf powder. Furthermore, when spread factor values were compared among the groups, they were found to be inversely proportional to the E. japonica leaf powder concentration. With increasing amounts of E. japonica leaf powder, L and a values decreased, whereas b value increased. In terms of textural characteristics, addition of E. japonica leaf powder increased hardness, cohesiveness, springiness, chewiness, and brittleness compared to control. Finally, the results of an acceptance test showed that Maejakgwa containing 5% E. japonica leaf powder had the highest scores.

• 한국식생활문화학회지
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• 제27권5호
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• pp.521-527
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• 2012

This study was conducted to examine the quality characteristics of tofu prepared with Loquat (Eriobotrya japonica Lindl.) leaf powder (LLP). Moisture, crude ash, carbohydrate, crude protein, and crude lipid contents of Loquat leaf powder were 10.25, 6.72, 69.54, 8.23, and 5.26%, respectively. The yield rates, turbidity, and total acidity of tofu increased according to the quantity of added LLP, whereas pH level decreased. The L- and a-values of samples decreased as the amount of LLP increased, whereas b-value increased. With regard to textural characteristics, LLP addition increased hardness, chewiness, and brittleness, as well as reduced springiness and cohesiveness. In terms of overall acceptability, the most preferred tofu samples were the control and 0.3% LLP addition groups.

• 한국지역사회생활과학회지
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• 제26권3호
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• pp.541-549
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• 2015

This study compares the major nutritional components of the leaf, flesh, and seed of dry loquat (Eriobotrya japonicaLindl.). Among proximate compositions, the crude fat, crude ash, and dietary fiber of the leaf exceeded those of the seed and flesh, whereas the carbohydrate content of the leaf was lower than that of the seed and flesh. The main component of free sugars in the leaf, flesh, and seed was fructose. Total amino acids of the leaf, flesh, and seed were 552.43, 63.00, and 260.29 mg%, respectively. Although the amino acid composition of the leaf, flesh, and seed varied, glutamic acid and ${\gamma}$-aminobutyric acid were the major amino acids in the leaf, flesh, and seed. Major fatty acids of total lipid were oleic acid and stearic acid in the leaf and seed, and the major acid was linoleic acid in the flesh. Major organic acids were oxalic acid in the leaf, maleic acid in the flesh, and citric acid in the seed. Vitamin C content was higher in the seed than in the leaf and flesh.

• 동아시아식생활학회지
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• 제22권6호
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• pp.795-801
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• 2012

This study was conducted to investigate the effects of loquat (Eriobotrya japonica Lindl.) leaf powder (LLP) on quality characteristics of dumpling shells. Dumpling shell samples were prepared with wheat flour containing different amounts of LLP, and their characteristics were then investigated. Amylography revealed that the gelatinization temperature of the LLP-wheat flours composite increased, while the initial viscosity at $95^{\circ}C$, viscosity at $95^{\circ}C$ after 15 minutes, and maximum viscosity, all decreased with increasing LLP content. As increasing amounts of LLP were added, the L and a values were reduced, whereas the b value was increased. Moreover, the addition of LLP increased hardness, cohesiveness, and adhesiveness, while it reduced springiness. Overall, sensory evaluation revealed that dumpling shells with 5% LLP were preferred more than other samples.

• 한국식품영양과학회지
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• 제42권11호
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• pp.1799-1804
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• 2013

비파잎 분말을 이용한 건강지향적인 쿠키의 개발을 위해 비파잎 분말을 각각 0%, 1%, 2%, 3%, 4%로 첨가하여 제조한 쿠키의 품질특성을 조사하였다. 비파잎 분말 첨가 쿠키의 밀도는 대조군이 1.22 g/mL였으며 비파잎 분말 쿠키는 1.23~1.25 g/mL로 나타났으나 시료간 유의적인 차이는 없었다. 쿠키 반죽의 pH는 비파잎 분말 쿠키가 대조군보다 유의적으로 낮은 수치를 나타냈으며, 쿠키의 퍼짐성 지수는 비파잎 분말 첨가량이 많을수록 큰 것으로 나타났다. 수분함량은 비파잎 분말 첨가량이 많을수록 높았으며, 대조군은 유의적으로 가장 낮은 수분함량을 보였다. 쿠키의 색도에서 L(명도)값은 비파잎 분말 첨가량이 증가함에 따라 유의하게 감소하였고 a값은 대조군이 가장 높게 나타났으며, 나머지 시료는 모두 음(-)을 나타내어 녹색의 경향을 띠었고 유의하게 감소하는 경향을 보였다. b값은 대조군이 가장 낮았고 비파잎 분말 첨가군은 유의적으로 증가하였다. 비파잎 분말첨가량을 달리한 쿠키의 경도는 비파잎 분말 첨가량이 증가할수록 높은 값을 나타냈다. DPPH 라디칼 소거능 증가율은 대조군, 비파잎 분말 1%, 2%, 3% 및 4% 첨가군 각각 0.00%, 12.53%, 11.46%, 11.12%, 10.65%로 이들 첨가군들은 대조군보다 유의적으로 높았다(P<0.05). 관능검사 결과 전반적인 기호도는 비파잎 분말 2% 첨가 쿠키가 가장 높게 평가되었고 다음으로 3% 첨가 쿠키가 높은 점수를 받았으며, 비파잎 분말 4% 첨가군에서는 대조군에 비해 선호도가 낮은 것으로 나타났다. 이상의 결과를 종합해 볼 때 비파잎 분말을 현대인이 즐겨 먹는 쿠키에 첨가함으로써 건강지향적인 측면을 고려한 쿠키 상품의 개발이 가능할 것으로 사료되며, 특히 비파잎 분말 2% 첨가 수준이 전반적인 기호도면에서 쿠키의 가치를 높일 수 있을 것으로 생각된다.

• 한국축산식품학회지
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• 제42권4호
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• pp.566-579
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• 2022

Deterioration of jerky during storage is a major concern; this is usually combated with natural or synthetic antioxidants. This study aimed to evaluate the quality characteristics of semi-dried restructured jerky with and without loquat leaf extract (LE) powder and ascorbic acid (AA) during storage for 180 days. The jerkies were formulated with 0%, 0.15%, and 0.3% LE and/or 0.05% AA (Control, no antioxidant; AA, 0.05% AA; LE 0.15, 0.15% loquat LE; LE 0.15-AA, 0.15% loquat LE+0.05% AA; LE 0.3, 0.3% loquat LE; LE0.3-AA, 0.3% loquat LE+0.05% AA). LE is a phenolic compound, whose 1,1-diphenyl-2-picrylhydarzyl radical scavenging activity and metal chelating activity were found to be higher than AA. All antioxidant combinations having higher LE concentration and containing AA were effective in delaying protein and lipid oxidation compared to the control or AA. At the end of storage period, LE 0.15-AA and AA had higher CIE a^* and lower shear force than the control. Therefore, the combination of 0.15% LE and 0.05% AA can result in reduced protein and lipid oxidation without any negative effect on the quality characteristics of semi-dried restructured jerky.