• 제목/요약/키워드: yogurt powder

검색결과 91건 처리시간 0.021초

막분리한 두부순물 농축분말첨가가 요구르트의 품질에 미치는 영향 (Influence of Addition of Membrane-Filtered Powder of Sunmul on the Quality Characteristics of Yogurt)

  • 정진영;정해정;김우정
    • 한국식품영양과학회지
    • /
    • 제34권10호
    • /
    • pp.1579-1585
    • /
    • 2005
  • 본 연구에서는 순물의 막분리에 의하여 제조된 농축분말을 사용하여 요구르트를 제조하고 pH, 적정산도, 점도, 생균수, 향기성분, 관능성 등을 분석함으로써 기능성 식품소재로의 이용 가능성을 검토하였다. UF 분말 첨가 요구르트의 발효 24시간 후 pH와 적정산도는 모든 시료간에 차이가 없는 것으로 나타났다. 점도는 대조군보다 UF 분말 첨가군이 낮았고 색도를 측정한 결과 UF분말 첨가 요구르트의 L값과 a값은 대조군과 첨가군간에 유의적인 차이가 없었고 b값은 UF분말 첨가량이 증가함에 따라 높아져서 유의적인 차이를 보였다. 생균수는 18시간까지 급격한 증가를 보이다가 그 이후 완만히 증가하여 발효 24시간에는 12.6$\∼$14.3$\times$$10^{8}$ CFU/mL를 나타내었고 대조군보다 UF 분말 첨가군에서 생균수가 높게 측정되었다. 요구르트의 휘발성 향기 성분은 UF분말 첨가군에서 대조군보다 다양한 향미 성분이 검출되었다. 관능검 사결과 냄새와 조직감은 시료간에 차이가 없었고 신맛은 UF분말 첨가군이 대조군보다 높게 평가되었으며 전체적인 바람직성에서는 시료간에 유의적인 차이가 없었다. 이상의 결과로 볼 때 UF분말을 이용하여 첨가수준을 조절하고 제조방법을 다양화한다면 영양학적으로 우수한 기능성 요구르트로서 그 이용가치가 있을 것으로 기대된다.

Fermentation Properties of Yogurt with Added Nano-Filtered Sunmul Powder

  • Chung, Hai-Jung;Choi, Min-Hee;Joo, Sin-Youn;Jung, Jin-Young;Kim, Woo-Jung
    • Food Quality and Culture
    • /
    • 제1권1호
    • /
    • pp.22-26
    • /
    • 2007
  • This study was performed to determine the feasibility of developing a healthy yogurt using tofu whey concentrates separated by nanofiltration (NF). The curd yogurt was prepared from whole milk with added skim milk powder, in which the NF powder was substituted at 0, 6.25, 12.5, or 25% for the skim milk powder. The quality characteristics were evaluated for pH, titratable acidity, viscosity, color, and viable cell counts. There were no significant differences in pH or titratable acidity between the control (yogurt with added skim milk powder only) and the yogurts with added NF powder, after 24 hr of fermentation at $37^{\circ}C$. The apparent viscosities of the yogurts with added NF powder were higher ($3,197{\sim}3,574\;cps$) than that of the control yogurt (3,196 cps). Lightness decreased, while yellowness increased, as the amount of NF powder increased. Sensory evaluations showed that the NF powder could be substituted for the skim milk powder at 6.25% without lowering the yogurt quality.

  • PDF

Effects of the Extract Yam Powder Addition on Yogurt Properties during Storage

  • Lee, Sun-Young;Ahn, Joung-Jwa;Kwak, Hae-Soo
    • 한국축산식품학회지
    • /
    • 제31권1호
    • /
    • pp.66-73
    • /
    • 2011
  • Physicochemical and sensory properties of Dioscorea opposita Thunb. (yam) powder-added yogurts (1, 3, 5, and 7%, w/v) were examined when stored at $4^{\circ}C$ for 16 d. When the yam concentration increased, the pH increased with 16 d storage. The lactic acid bacteria counts in all yogurt samples showed an increase during storage period, and the highest counts were appeared with 7% yam powder addition. The dramatic decrease was found in viscosity with higher concentrations of yam powder-added yogurt samples. No change was found in allantoin and diosgenin contents for 16 d storage periods. A significantly strong bitterness and astringency and decreased viscosity were found with 5 and 7% yam powder addition. However, less than 3% yam powder-added yogurt samples did not show a significant difference compared with the control (p>0.05) and overall acceptability score was the highest in 3% yam powder-added yogurt throughout the storage. The present study indicated that the concentrations (1 and 3%, w/v) of yam powder could be used to produce yam powder-added yogurt without significant adverse effects on physicochemical, microbial and sensory properties, and enhance functional components from the supplementation.

자색고구마 첨가 요구르트의 제조 및 특성 (Preparation of Yogurt from Milk Added with Purple Sweet Potato)

  • 전승호;이상욱;신용서;이갑성;류일환
    • 한국식품영양학회지
    • /
    • 제13권1호
    • /
    • pp.71-77
    • /
    • 2000
  • New type yogurt base were prepared from milk added with skim milk powder or purple sweet potato, and fermented by lactic acid bacteria (Streptococcus thermophilus and Bifidobacterium infantis, 1:1, v/v). The yogurt proudcts were evaluated for acid production(pH, titratiable acidity), number of viable cell, viscosity, sensory properties, and color value. The composition of some organic acids was also analyzed by GC. The acid production slightly decrerased by addition with purple sweet potato. There was no significant difference in viable cell counts between control (yogurt added with only skim milk powder) and yogurt added with purple sweet potato, and viable cell counts of all samples were above 9.08 log cfu/ml. Viscosity of yogurt added with purple sweet potato(36,800∼46,000 centipoise) was higher than that of yogurt added with only skim milk powder(32,200 centipoise). The overall sensory score of yogurt added with purple sweet potato(38.6%, dry base) was the best of tested yogurt. The major organic acid of yogurt added with purple sweet potato was lactic acid. its content was 0.997∼1.203%. malic acid, succinic acid, oxalic acid, and fumaric acid were analyzed out a little. Lightness and yellowness decreased by addition with purple sweet potato but redness increased. Total color difference($\Delta$E) with yogurt addition with purple sweet potato and only skim milk powder were very high(above 11.46).

  • PDF

대추 열수 추출물을 첨가한 호상 요구르트의 품질 특성 (Quality Characteristics of Curd Yogurt Supplemented with Jujube Hot-water Extracts)

  • 김안나;정현아
    • 동아시아식생활학회지
    • /
    • 제23권1호
    • /
    • pp.69-77
    • /
    • 2013
  • Jujube is a functional food, containing medicinal ingredients without side effects. Jujube can relieve digestive upset, inhibit tumor growth and protect the liver. It includes sterols, alkaloids, saponins, vitamins, organic acids, and amino acids. Jujube has also received attention as an anticancer agent and as a diet food. However, it is rare to find yogurt made with jujube, so we considered adding jujube powder to yogurt to popularize it as a new health food. We made yogurt with jujube powder at 0, 1, 2, 3, and 4%. We measured pH, acidity, color properties (brightness, redness, yellowness), viscosity, sensory qualities (color, flavor, taste, overall quality). We also experimented with storage stability at intervals of 1, 5, 10, 15, and 20 days. The results showed that pH increased significantly (p<0.001) with increasing amounts of added jujube powder. The pH also rose significantly with longer storage, but tended to decrease after 20 days. Acidity was reduced during the storage period. Viscosity was highest with 1% added jujube powder (p<0.001) on day 5 of storage (p<0.001). The L color value decreased as the amount of added jujube powder increased, whereas the a-value (redness) and b-value (yellowness) increased (p<0.001). In an sensory test, color in samples with 0, 1, and 2% jujube powder exhibited the highest values (p<0.01), but no significant differences in flavor or texture were observed. Sweetness and sourness were highest in the yogurt with 3% jujube powder (p<0.05). Overall quality tended to be higher for yogurt with 3% jujube powder, but the difference was in significant. Taken together, our results indicate that yogurt with 3% jujube powder may the most suitable for manufacturing purposes.

Aloe vera가 첨가된 요구르트의 제조와 그 품질 특성 (Preparation of Yogurt Added with Aloe vera and Its Quality Characteristics)

  • 신용서;이갑상;이정성;이철호
    • 한국식품영양과학회지
    • /
    • 제24권2호
    • /
    • pp.254-260
    • /
    • 1995
  • Yogurt base were prepared from milk added with skim milk powder or Aloe vera powder and femented with lactic acid bacteria(the single or mixed strain of Lactobacillus bulgaricus and Streptococcus thermophilus). The yogurt product were evaluated for acid production(pH, titratable acidity), number of viable cell, viscosity, sensory property and quality-keeping property. The composition of organic acid were also analyzed by HPLC. Addition of Aloe vera remarkably accelerated acid production, and titratable acidity of Aloe vera yogurts(1.293∼1.407%) after 24 hours incubation was higher than that of yogurts added with only skim milk powder(9.98∼1.110%). Yogurt fermented with the mixed strain of L. bulgaricus and Sc. thermophilus was more acidic than that of single strains. The propagation of lactic acid bacteria was stimulated by Aloe vera and the number of viable cell after 24 hours incubation were above 9.87log CFU/ml. Viscosity of Aloe vera yogurt(3,860∼4,300CPS) was higher than that of yogurt with only skim milk powder(2,402∼2,604CPS). The overall sensory score of Aloe vera yogurt femented by mixed strain was the best of tested yogurt. When yogurt with Aloe vera was kept at 5℃ for 15 day, it's quality-keeping property was relatively good. The major organic acid of Aloe vera yogurt was lactic acid and lactic acid content of yogurt increased by addition of Aloe vera powder. The citric acid content decreased wtih fermentation and malonic acid, pyroglutaric acid and α-ketoglutaric acid were analyzed out a little.

  • PDF

마늘 분말의 첨가가 요구르트의 제조와 품질에 미치는 영향 (Effect of Garlic Powder on Preparation and Quality Characteristics of Yogurt)

  • 조자래;김주희;인만진
    • Applied Biological Chemistry
    • /
    • 제50권1호
    • /
    • pp.48-52
    • /
    • 2007
  • 마늘 분말을 첨가한 호상 요구르트를 개발하기 위하여 탈지분유에 마늘 분말을 혼합하고 Lactobacillus acidophilus, Bifidobacterium longum, Streptococcus thermophilus를 혼합 균주를 접종하여 마늘 분말의 첨가가 유산균의 생육에 미치는 영향과 품질특성 및 관능적 특성을 검토하였다. 마늘 분말을 0.2-1.0%(w/v) 첨가한 결과 산의 생성과 젖산균의 증식이 마늘 분말을 첨가하지 않은 대조군보다 감소되었으며, 18시간 발효시킨 요구르트의 적정 산도는 대조구의 1.35%에서 마늘분말을 1.0% 첨가한 경우 1.08%로 20% 감소하였다. 마늘 분말의 첨가로 요구르트의 점도는 약2배 증가하였으나, 색도는 거의 일정하였다. 요구르트에 설탕을 10% 첨가하고 관능적 특성을 조사한 결과 마늘 분말을 0.5% 이상 첨가한 경우 마늘 향과 맛이 강하게 감지되어 요구르트의 기호도는 낮게 평가되었다. 그러므로 마늘 분말의 첨가량은 0.2% 수준이 적당한 것으로 나타났다.

분리대두단백과 유청분말을 사용한 대두 요구르트의 제조에 관한 연구 (Preparation of Soy Yogust Using Isolated Soybean Protein and Whey Powder)

  • 장재권;윤승헌
    • 한국식품영양과학회지
    • /
    • 제26권6호
    • /
    • pp.1128-1134
    • /
    • 1997
  • Lactobacillus helveticus was inoculated to the fermentation liquid containing skin milk powder(SMT) plus soymilk, SMP plus isolated soybean protein(ISP), SMP plus ISP plus whey powder(WP) to increase the nutritional and economic value of commercial soy yogurt. The yogurt fermented with soymilk and SMP showed the lower acid production than of SMP and had significant beany flavor in the product. The yogurt prepared with ISP and SMP showed the higher cell number and lower acid production than that of SMP. Also, the partial substitution of SMP with ISP over 6%(w/w) produced less acceptable product due to gel production. The yogurt prepared by the partial substitution of SMP with ISP, WP and SMP showed the higher cell number and lower acid production than that of SMP and not bring about gel formation unlike the case of ISP. Sensory properties of yogurt substituted SMP with ISP and WP(38:62 mixture) below 4% were not significantly different from that of SMP and the sample containing the mixture over 6% and 0.067% artificial flavor showed lower sensory score due to beany taste than that of SMP. But increase of yogurt flavor up to 0.1% resulted in significantly high score in organoleptic acceptability. The separation of water occured in yogurt prepared by the combined mixture of ISP, WP and SMP, and this problem could be resolved by addition of Na-alginate and PGA at the concentration of 0.1%(w/w).

  • PDF

단감 분말을 첨가한 요구르트 제조 및 품질특성 (Preparation of Yogurt Supplemented with Sweet Persimmon Powder and Quality Characteristics)

  • 조영수;차재영;권오창;옥민;신승렬
    • 한국식품저장유통학회지
    • /
    • 제10권2호
    • /
    • pp.175-181
    • /
    • 2003
  • 단감분말을 첨가한 호상 발효유를 제조하기 위하여 탈지분유에 단감분말을 4% 및 7% 첨가하여 Lactobacillus acidophillus 균주를 접종하여 유산균의 생육에 미치는 영향과 관능적 특성 및 품질 특성을 검토하였다. 단감분말은 단백질 2.2%, 지질 30.5%, 탄수화물 56.6% 및 회분 2.5%를 함유하였다. 단감분말을 첨가하여 24시간 발효시킨 발효유의 유기산중 lactic acid 농도가 1.12%∼1.21%로 탈지분유만을 사용하여만든 발효유 1.05% 보다 높았다. 관능검사 결과에서는 단감분말을 첨가시킨 발효유보다는 탈지분유만을 사용한 발효유에서 선호도가 약간 높게 나왔다. 그러나, 발효유의 산 생성능으로 나타낸 pH는 각 발효유 사이에 큰 차이가 없었다. DPPH(a-a'-diphenyl-$\beta$-picrylhydratyl) 측정법에 의한 항산화 활성은 탈지분유 14%, 탈지분유 10%+단감분말 4%, 탈지분유7%+단감분말 7%를 함유한 각각의 발효액에서 대조구로 사용한 시판 항산화제 BHT 0.005%보다 약간 높게 나왔다. 따라서 단감건조 분말을 이용한 식품 신소재 개발을 위한 기초자료를 제공하고 단감첨가 발효유의 생리적 유용성을 활용할 수 있는 가능성이 있는 것으로 사료되었다.

오디분말을 첨가한 요구르트의 품질 및 항산화능에 미치는 영향 (Effect of Mulberry Powder on Antioxidant Activities and Quality Characteristics of Yogurt)

  • 성정민;최해연
    • 한국식품영양과학회지
    • /
    • 제43권5호
    • /
    • pp.690-697
    • /
    • 2014
  • 본 연구는 오디분말을 0, 0.5, 1, 3% 비율로 첨가한 요구르트를 제조한 후 24시간 동안 발효시키면서 시간별로 오디요구르트의 항산화 활성 및 이화학적 품질특성을 측정하고, 24시간 발효 후 관능평가를 실시하였다. 총 페놀 함량과 안토시아닌 함량 및 DPPH radical 소거능은 오디 첨가량에 따라 유의적으로 증가하였다. pH는 오디 첨가 요구르트가 발효시간이 경과할수록 대조군에 비해 유의적으로 감소하였으며, 산도는 발효 중에는 대조군을 제외한 오디 첨가군 요구르트가 첨가량에 따라 증가하였다. 유기산은 발효 16시간까지는 오디 첨가군이 대조군에 비해 함량이 높았지만, 그 이후에는 대조군의 함량이 높았다. 유산균의 생균수는 발효 8시간까지는 오디 첨가량에 따라 유산균 수가 증가하였지만 16시간 경과 후부터는 1%와 3% 요구르트의 생균수가 대조군보다 감소하는 경향을 보였다. 유당의 함유량은 발효 전 거의 차이가 없었으나 발효 24시간 이후에는 대조군의 함유량이 가장 낮았다. 유기산, 유산균, 유당 분석 결과 오디는 요구르트 발효의 일정기간까지는 첨가량에 따라 요구르트 발효에 상당한 영향을 주지만 지속적인 영향을 미치진 못하는 것으로 사료된다. 색도 측정에서 오디분말을 첨가할수록 L값과 b값은 감소했으며 a값은 증가하였다. 오디 첨가 요구르트의 관능적 품질평가 결과 1% 첨가군이 모든 항목에서 가장 높은 점수를 받았으며, 3% 첨가군은 대조군보다 관능평가에서 낮은 점수를 받았다. 이러한 결과로 보아 요구르트를 제조 시 1%의 오디분말 첨가는 요구르트의 발효와 품질특성을 향상시키고 기호도를 증가시키는 것으로 사료된다.